New to GMod, need some help

Hi, sorry to sound like a complete noob but I have recently purchased Garry’s Mod and being new to the programme I am very unfamiliar with how to use it. I have looked through the internet for begginers guides etc but could not find any. I know there are tutorials on the menu screen of Garry’s mod itself but are there any other written/video tutorials on the web on the basics of the programme?Thanks.

Search through all of these, see if this helps.