mtahle · mtahle · Jun 22, 2026 · Jun 22, 2026
diff --git a/docs/automation/container-cicd.md b/docs/automation/container-cicd.md
@@ -1089,9 +1089,8 @@ spec:
 
 After implementing container CI/CD pipelines:
 
-- Advanced Deployment Strategies (blue-green, canary deployments)
-- Infrastructure as Code with Terraform and Ansible
 - [Monitoring and Observability](../monitoring/introduction.md)
+- [Advanced & Emerging Topics](../advanced/index.md) - GitOps, progressive delivery, IaC at scale
 
 !!! tip "CI/CD Best Practices"
     - Implement comprehensive testing at every stage

diff --git a/docs/automation/index.md b/docs/automation/index.md
@@ -47,3 +47,5 @@ Automation and CI/CD are crucial for DevOps because:
 - **Risk Reduction**: Smaller, more frequent, less risky deployments
 
 You are now prepared to establish observability and reliability foundations.
+
+[Start with Automation Introduction →](introduction.md){ .md-button .md-button--primary }
diff --git a/docs/concepts/domains-dns.md b/docs/concepts/domains-dns.md
@@ -517,7 +517,6 @@ With domain and DNS knowledge, you're ready to:
 
 - [Internet Protocols](protocols.md) - Deep dive into HTTP, TCP/IP, and networking
 - [SSL Certificates](ssl.md) - Implement secure connections for your domains
-- [Web Development](web-development.md) - Apply DNS concepts in application development
 - [Linux Server Management](../linux/introduction.md) - Configure DNS on production servers
 
 !!! tip "Practical Exercise"

diff --git a/docs/concepts/index.md b/docs/concepts/index.md
@@ -1,4 +1,4 @@
-# DevOps Fundamentals
+# Network & Web Fundamentals
 
 Welcome to the DevOps Fundamentals section! This section covers the essential concepts and technologies that form the foundation of modern DevOps practices.
 

diff --git a/docs/concepts/internet-basics.md b/docs/concepts/internet-basics.md
@@ -292,8 +292,8 @@ Understanding internet fundamentals positions you for roles in:
 Once you understand internet basics, proceed to learn about:
 
 - [Web Development Fundamentals](web-development.md)
-- [Internet Protocols](protocols.md)  
 - [Domain Names & DNS](domains-dns.md)
+- [Internet Protocols](protocols.md)
 
 !!! tip "Learning Tip"
     Take time to understand these fundamentals - they form the foundation for everything else in DevOps! Practice with the command-line tools and try setting up a simple network lab using VirtualBox or VMware.

diff --git a/docs/concepts/protocols.md b/docs/concepts/protocols.md
@@ -98,15 +98,14 @@ graph LR
 
 #### **Special IP Addresses**
 
-    # View certificate information
-    openssl x509 -text -noout -in certificate.crt
-
-    # Generate CSR
-    openssl req -new -key private.key -out server.csr
-
-    # Generate self-signed certificate
-    openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
-        -keyout private.key -out certificate.crt
+| Address / Range | Purpose |
+|----------------|---------|
+| `127.0.0.0/8` | Loopback — traffic stays on the local host (`127.0.0.1` = localhost) |
+| `0.0.0.0` | Unspecified — used by hosts before they obtain an IP address |
+| `255.255.255.255` | Limited broadcast — reaches all hosts on the local network segment |
+| `169.254.0.0/16` | Link-local (APIPA) — auto-assigned when DHCP is unavailable |
+| `100.64.0.0/10` | Carrier-grade NAT shared address space (RFC 6598) |
+| `224.0.0.0/4` | Multicast — one sender, many receivers |
 
 ### IPv6 Addressing
 
@@ -750,8 +749,7 @@ Protocol expertise is essential for:
 Understanding protocols enables you to:
 
 - [Configure SSL Certificates](ssl.md) - Implement secure HTTPS communications
-- [Manage Domain Names & DNS](domains-dns.md) - Configure reliable name resolution
-- [Web Development Fundamentals](web-development.md) - Apply protocol knowledge in applications
+- [Web Hosting Concepts](hosting.md) - Explore hosting options and infrastructure
 - [Linux Server Management](../linux/introduction.md) - Configure and secure production servers
 
 !!! tip "Practical Exercise"

diff --git a/docs/concepts/ssl.md b/docs/concepts/ssl.md
@@ -94,9 +94,8 @@ timeline
 
 With SSL knowledge, you're ready to:
 
-- [Explore Domain Management](domains-dns.md)
+- [Web Hosting Concepts](hosting.md) - Explore hosting options and deployment infrastructure
 - [Set up Linux Servers](../linux/introduction.md) with proper SSL configuration
-- [Implement Container Security](../containers/security.md)
 
 !!! info "DevOps Integration"
     SSL certificate management is a critical component of infrastructure automation, security compliance, and application deployment pipelines.
diff --git a/docs/concepts/web-development.md b/docs/concepts/web-development.md
@@ -620,10 +620,10 @@ Once comfortable with basics, explore:
 
 After mastering web development fundamentals, proceed to:
 
-- [Hosting Solutions](hosting.md) - Learn about different hosting options and deployment strategies
+- [Domain Names & DNS](domains-dns.md) - Learn how domain resolution works
 - [Internet Protocols](protocols.md) - Deep dive into HTTP, TCP/IP, and other essential protocols
 - [SSL Certificates](ssl.md) - Understand security and encryption for web applications
-- [Domain Names & DNS](domains-dns.md) - Learn how domain resolution works
+- [Hosting Solutions](hosting.md) - Learn about different hosting options and deployment strategies
 
 !!! tip "Practical Exercise"
     **Try This**: Create a simple web application using your preferred technology stack, set up a Git repository, implement a basic CI/CD pipeline using GitHub Actions, and deploy it to a cloud platform like Netlify or Vercel.

diff --git a/docs/containers/index.md b/docs/containers/index.md
@@ -53,3 +53,5 @@ Containers are essential for modern DevOps because:
 - **Resource Efficiency**: Better resource utilization than traditional VMs
 
 Next you will apply these concepts in automation and delivery practices.
+
+[Start with Container Introduction →](introduction.md){ .md-button .md-button--primary }
diff --git a/docs/containers/kubernetes-production.md b/docs/containers/kubernetes-production.md
@@ -1014,9 +1014,8 @@ spec:
 
 After mastering production Kubernetes deployment:
 
-- Service Mesh Deep Dive (Istio, Linkerd)
-- Multi-Cloud Kubernetes deployment
-- Kubernetes Cost Optimization strategies
+- [Automation & CI/CD](../automation/index.md) - next major section
+- [Advanced & Emerging Topics](../advanced/index.md) - service mesh, multi-cloud, FinOps, and more
 
 !!! warning "Production Checklist"
     - [ ] High availability control plane

diff --git a/docs/containers/security.md b/docs/containers/security.md
@@ -902,8 +902,7 @@ podman-compose up -d
 After mastering container security and advanced topics:
 
 - [Kubernetes Production Deployment](kubernetes-production.md)
-- [Container CI/CD Pipelines](../automation/container-cicd.md)
-- Service Mesh Implementation (Istio, Linkerd)
+- [Advanced Topics: Service Mesh & Beyond](../advanced/index.md)
 
 !!! warning "Security Reminders"
     - Never run containers as root in production

diff --git a/docs/index.md b/docs/index.md
@@ -14,23 +14,27 @@ This roadmap is based on content from the [5th episode of DevOps on the Go podca
 
 This roadmap is designed to be followed sequentially for maximum benefit. Each section builds upon the previous one, creating a solid foundation for DevOps mastery.
 
-### 1. **Fundamental Concepts**
+### 1. **Foundations**
 
-Understanding how the internet works, web development basics, and essential protocols.
+What DevOps is, where it came from, the CALMS framework, core practices, and culture.
 
-### 2. **Linux & Server Management**
+### 2. **Network & Web Fundamentals**
+
+How the internet works, web development basics, DNS, protocols, SSL, and hosting.
+
+### 3. **Linux & Server Management**
 
 Master Linux systems, server administration, and hosting solutions.
 
-### 3. **Containerization & Orchestration**
+### 4. **Containerization & Orchestration**
 
 Learn Docker, Kubernetes, and modern container technologies.
 
-### 4. **Automation & CI/CD**
+### 5. **Automation & CI/CD**
 
 Implement continuous integration, delivery, and infrastructure as code.
 
-### 5. **Monitoring & Observability**
+### 6. **Monitoring & Observability**
 
 Build robust monitoring and observability solutions.
 

diff --git a/docs/introduction/index.md b/docs/introduction/index.md
@@ -17,7 +17,6 @@ This foundational section establishes the mindset, principles, and cultural unde
 3. CALMS Framework
 4. Core Practices & Principles
 5. Culture & Collaboration
-6. Metrics, Feedback, and Continuous Improvement (future section)
 
 > As you progress, refer back here to re-anchor decisions in foundational principles rather than tools.
 

diff --git a/docs/introduction/practices.md b/docs/introduction/practices.md
@@ -21,8 +21,8 @@ These practices operationalize DevOps values and create sustainable delivery per
 - Continuous Delivery (automated promotion, environment parity)
 - Infrastructure as Code & Immutable artifacts
 - Configuration Management + Secret Management hygiene
-- GitOps for reconciliation (future advanced topic placeholder): This will include practices like declarative configurations, reconciliation loops, and tools such as Argo CD.
-- Policy as Code for compliance (placeholder): This will cover automated policy enforcement using tools like OPA and Conftest, with examples for CI/CD pipelines.
+- GitOps for reconciliation (declarative configurations, reconciliation loops, Argo CD)
+- Policy as Code for compliance (automated policy enforcement via OPA / Conftest)
 
 ## Reliability & Resilience
 

diff --git a/docs/linux/advanced-hosting.md b/docs/linux/advanced-hosting.md
@@ -689,9 +689,8 @@ echo "- Caching: Redis/Memcached for > 200 RPS"
 
 After implementing advanced hosting solutions:
 
-- Container Orchestration with Kubernetes
-- [Infrastructure as Code](../automation/introduction.md)
-- [Advanced Monitoring](../monitoring/introduction.md)
+- [Network Troubleshooting Tools](troubleshooting-tools.md)
+- [Containers & Orchestration](../containers/index.md) - next major section
 
 !!! tip "Best Practices"
     - Always implement redundancy for critical services

diff --git a/docs/linux/index.md b/docs/linux/index.md
@@ -57,3 +57,5 @@ Linux skills are essential for DevOps because:
 - **Monitoring**: System monitoring and log analysis on Linux systems
 
 Proceed when you are comfortable with these Linux fundamentals.
+
+[Start with Linux Introduction →](introduction.md){ .md-button .md-button--primary }
diff --git a/docs/linux/introduction.md b/docs/linux/introduction.md
@@ -155,9 +155,9 @@ Host myserver
 
 After mastering Linux basics, explore:
 
-1. [Network Troubleshooting Tools](troubleshooting-tools.md)
-2. [Self-Managed Web Hosting](web-hosting.md) 
-3. [Advanced Hosting Solutions](advanced-hosting.md)
+1. [Self-Managed Web Hosting](web-hosting.md)
+2. [Advanced Hosting Solutions](advanced-hosting.md)
+3. [Network Troubleshooting Tools](troubleshooting-tools.md)
 
 ## Practical Exercises
 

diff --git a/docs/linux/troubleshooting-tools.md b/docs/linux/troubleshooting-tools.md
@@ -224,9 +224,7 @@ fi
 
 Master these troubleshooting tools, then move on to:
 
-- [Self-Managed Web Hosting](web-hosting.md)
-- [Advanced Hosting Solutions](advanced-hosting.md)
-- [Container Networking](../containers/introduction.md)
+- [Containers & Orchestration](../containers/index.md) - next major section
 
 !!! tip "Best Practices"
     - Always start with basic connectivity (ping)

diff --git a/docs/linux/web-hosting.md b/docs/linux/web-hosting.md
@@ -603,8 +603,7 @@ sudo systemctl restart apache2
 After setting up self-managed hosting, explore:
 
 - [Advanced Hosting Solutions](advanced-hosting.md)
-- [Container-Based Hosting](../containers/introduction.md)
-- [Monitoring Web Applications](../monitoring/introduction.md)
+- [Network Troubleshooting Tools](troubleshooting-tools.md)
 
 !!! warning "Production Security"
     - Keep all software updated with security patches

diff --git a/docs/monitoring/index.md b/docs/monitoring/index.md
@@ -29,12 +29,7 @@ Learn monitoring fundamentals, metrics collection, and observability principles.
 
 ```mermaid
 flowchart LR
-    A[Monitoring Introduction] --> B[Advanced Monitoring]
-    A --> C[Alerting & Response]
-    A --> D[Log Management]
-    B --> E[Observability]
-    C --> E
-    D --> E
+    A[Monitoring Introduction] --> B[Advanced & Emerging Topics]
 ```
 
 ## Why This Matters
Original file line number	Diff line number	Diff line change
Expand Up		@@ -47,3 +47,5 @@ Automation and CI/CD are crucial for DevOps because:
		- Risk Reduction: Smaller, more frequent, less risky deployments

		You are now prepared to establish observability and reliability foundations.

		[Start with Automation Introduction →](introduction.md){ .md-button .md-button--primary }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -53,3 +53,5 @@ Containers are essential for modern DevOps because:
		- Resource Efficiency: Better resource utilization than traditional VMs

		Next you will apply these concepts in automation and delivery practices.

		[Start with Container Introduction →](introduction.md){ .md-button .md-button--primary }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -57,3 +57,5 @@ Linux skills are essential for DevOps because:
		- Monitoring: System monitoring and log analysis on Linux systems

		Proceed when you are comfortable with these Linux fundamentals.

		[Start with Linux Introduction →](introduction.md){ .md-button .md-button--primary }