Some help with a aim map!

[PooSlice]

Theres mainly two things I want to know.
1. How to you put out weapons on the ground, and make them return after a new round.
2. How do i make a "sun" light?

EDIT: Just remebered another thing

3. How do you make buyzones?

 

[Geronimous]

I think doing some research on your own through VERC Collective and other mapping site will learn you more and faster.

http://collective.valve-erc.com/

with some searching:
1. entities
2. I don't know either yet
3. its a basic entity. create a brush you want to be the size of the buyzone, then make it an entity called func_buyzone.