Question about Vehicle Texture/Camo.

Hi,

first of all i want to say that i have Zero experience in modding stuff in this game, so i might have lots of questions...

i always wanted to learn how to change vehicle camo and painjob for PR, but never had that much of free time since most of it i spent playing...

now my main question here for a starter is lets say i'd like to change the MIG-21 russian jungle camo to a desert camo or any camo paintjob. what do i need so i can be able to change the camo texture in this game.. ?

what tools i need to install ?

how can i make texture camo's with out stealing other works and making my own camo that i want ?

Regards.