Hey there, this is a small branch of my site that I've put together to help people learn about Trouble in Terrorist Town.
It includes sections on how to play the gamemode, the roles it features, gear you can use, and terms involved.
Bear in mind, the details listed here may be different on other servers hosting the gamemode as TTT and Garry's Mod in general are heavily moddable.
The following are explanations of the various roles, equipment, and terms used in TTT:
These are esoteric sections of questionable value:
If you're still struggling, I can offer some advice on making and breaking alibis, based on all of this information.
I've recently put together some custom achievements for the TTT gamemode found here.