Alittle help?

Well, hello. I need a little help with Gmod problem. And I was hoping that someone will help.(OK OK IM A NOOB!)

So when I start gmod load up a map, spawn, and its like I cant do CRAP anymore. I cant jump, use weapons, cant respawn and cant use tool gun.

So help me out if you can. Thank you.
(sorry if this is the wrong section)

Post yer addons folder.