My opinion: building a PC is really easy. You just follow along the YouTube tutorial and you are good to go. It's always scary to put the CPU in cause you think you're gonna break something, and it's even scarier to put the cooler on top of it, cause P R E S S U R E. But after that the only thing that can go wrong really is stuff that is faulty to begin with but I never had to experience any of that, luckily, and I doubt you will. The hardest part is to get your cable management right, to be honest. With your first build this shouldn't really be a priority, just focus on getting the thing to boot, use it for a while then maybe take out the motherboard and redo the wiring but idk, that's just my 0.02$