Great start. See this from the OSM Imports list for other possible required knowledge that might be incorporated into this, though some might be already part of established training material somewhere else.
- What's a relation is?
- Difference between highway=trunk, and highway=service,
- How to tag schools,
- How to replace geometry in JOSM, and when should it be used.
- What are image offsets, and how to apply them in JOSM,
- What are change set comments.
- Have they gone and mapped their local neighborhood by hand
If they are doing an address import, do they understand
- when to tag a building, when to put the address on a node,
- how to tag address interpolation,
- how to handle new addresses and existing POI's,
- what are all of the address tags
community
- What to do with OSM messages
- What is the DWG, and what does it mean when they write you a message.
Great start. See this from the OSM Imports list for other possible required knowledge that might be incorporated into this, though some might be already part of established training material somewhere else.