Can you post any mapping questions in the "mapping help" thread here:
Here are some quick answers:
1. Compile the map using compile tools, then copy the bsp into quake/id1/maps. You can then load the map by entering map <mapname>
2. Try Tyrann's latest tools for the most up to date tools around: http://www.celephais.net/board/view_thread.php?id=60906&start=169
3. The easiest to use tool is TexMex, which you can find here: https://www.quaddicted.com/files/tools/texmex_34_portable.7z
4. There are various tools for this, but I don't know myself. Sock, Necros, Preach or MadFox might be able to help you, since they have done a fair bit of modelling.
Please ask any further questions in the Mapping help thread. ;)