physically building a computer is pretty easy. Essentially you put the square pegs in the square holes. Each piece lines up to a slot on the motherboard. It is physically impossible to like put your ram where your video card should go. The only thing that is strange the first time you build a computer is the ammount of force somethings take to fit into place. I remember putting alot of force on my processor fan to get it into the motherboard. I was scared even though i had built several before.