Getting started with TF2 mapping

ok, the Pukka SDK is now out I can get started on a map. Valve forgot to provide an example map so I can see how to build a TF2 map. Can people post links to example/tutorial/test TF2 (ideally "vmf" files as well) in this thread to help people like me get started. Ideally I'd like to know about the new skybox textures (or however they're doing it skyboxes for TF2) + lighting etc. Here's a good link for spawn points. I'll add more as time goes on.

Spawn points
Resupply
valve wiki - Team Fortress 2 Level Creation

I know these have been posted elsewhere but here are the decompiled (.vmf )versions of the default TF2 maps:

cp_dustbowl
cp_granary
cp_gravelpit
cp_well
ctf_2fort
tc_hydro