I'm desperate

My boyfriend used to deal with the server side and now we've split, i'm lost
I have my own server and need it setting up so i can install vB, however, i only have very very basic knowledge on Linux and usually just copy/paste what i need to do. I've been trying for the last 5days, but to no avail. I know how to actually install vB itself, but i need my server ready to accept it.
Can anyone help me please, either point me to a tutorial that is step by step for beginners, or help me install it and if its gonna cost me, how much? Please someone help, i'm at the end of my wits and ready to just give up
My server is fresh, so can install w/e OS is preferred.
Thanx