MODING

Alright i want help doing this i have read the toturial i have downloaded the files (Except Photoshop) im working on getting that also does anyone have a site i could get it for free Ty i want help moding some gun i wanna learn everything from easy modification like adding pics or colors to ur gun all the way to crossmoding could some one teach me

you dont need photoshop just get paint.net or gimp or something