Links
Mapping Tutorials
http://easymapping.free.fr/html/
http://wikimapping.free.fr/index.php?title=Accueil
http://games.chruker.dk/enemy_territory/
Models - Skyboxs - Textures
http://www.blackrayne.net/
http://www.wemakemaps.com/mapmodeltext.htm
http://www.map-craft.com/modules.php?name=Map_Resources
http://www.alusion-fr.com/an1ffa.htm
http://www.gd-experience.eu/index.php?section=2&category=6
http://www.fpsbanana.com/tuts/9380
http://www.schloerb.com/Dreamscape2/
http://amethyst7.gotdoofed.com/env.htm
http://brimstone.brimstone.com/quake2/local/env/
http://www.splashdamage.com/forums/showthread.php?t=1270
http://www.simonoc.com/pages/materials.htm