Can someone give me a guide on how to build a computer?

I can't find a decent guide on google. All of them are so complicated.

So can someone give me a guide with
Where to buy parts.
What to do after you buy the parts?

I know I'm stupid.
im like this guy


so please help

hmm looking for a guide as well. Already got a list of parts. Youtube helps.

Go to a computer store or any technology store, they give out simple and advanced guides. Also try Best Buy, Try geek Squad or give a call to sprint or any company that are contracted with people that make computers.
Thank me if it helped btw.