How to make a cool map? Help?

I need help making a map for Deus Ex in SDK. All I have been able to make is a Cube with a spawnpoint and light. And I was only able to do THAT because I read a walkthrough on making a basic cube!
Somebody please tell me how to make a full map. My AIM is in my pro, and I play on Deus Ex as [DA]S3TH[DxM][Sx1].
Thanks.

Somebody please tell me how to make a full map. My AIM is in my pro, and I play on Deus Ex as [DA]S3TH[DxM][Sx1].
Thanks.