ok, do u i apply to be a map maker there? im just starting out so i wont be the best one out there, ive already made two. aim_jacklehide and fun_grenadetimedawg. but both of them are weird.. you cant spawn in them
There is nothing to join . Just map away
If you need help, check out some of the stickies in the section Josh just linked or make a thread about it there.
Make sure to be open to criticism.