[JAMF]

What is your budget? Do you already have a system, from which components could be reused?

tight budget, no other system other than a laptop... ilooked at the pic of the mobo and i think i can just place a new graphics card in slot

Maybe a friend has an old system he would be willing to give you as a "donor system". That way you have a start and don't have to buy everything new. Or look at second hand. It's like buying a second hand car: You're not getting the newest, but you get a lot of BANG for your buck.