New project need help setting up Gmod and CSS

So, I’ve left the GMOD community for a long time and am now back. I’m making a new community for the game with multiple gamemodes. I have a dedicated server ready to use just need some help setting it up.

Contact me via skype: TheCharlieHD

Cheers,
Luke

*Edit
Server specs if needed

Google is your friend; we can walk you step by step via here, not through Skype. What do you need help with first?