Pre builds?

Hey guys, I’m new to the whole PC thing. I’ve never built my own PC, but i really am interested in getting a gaming pc. I have absolutely no clue how to build one, but i’m sure i could figure it out. I’m in school and my degree is Aerospace engineering. i was advised that i would be needing a computer that is able to handle large projects. So i thought why not kill two bird with one stone. Does anyone have any good recommendations on how i should start? Or any good pre built options? Anything helps!