Valve Hammer Editor

Hello, after a while trying to make a succesfully nice map, for my Zombie mod server, that are famous and known as
Puble - Zombiemod. The server are down at the moment. trying to figure out why it crashes alot. ( u Know? Send me a pm )

Well. i will get to the point of making this Topic.

I'am trying to find a Good and well written guidé to succes a nice map. i have googled alot. i cannot find any.
and maybe a site where i can download Valve Hammer editor. Sometimes my hammer bugs.

if your Hammer bugs then buy this:

hazik666 wrote:http://neondragon.forumotion.co.uk/tutorials-f31/

Thank you alot