u/Nervous-Character-55

Hi, the title is quite self-explanatory! I'm new here, and I'm also new to the world of gaming PCs. I really like games like HOI4, Warframe, Total War saga and War Thunder (not only these ones specifically, but I've given the idea quite clear). I've never built a PC, let alone a gaming PC, so I'm quite sure that I'll be giving my parts to one of my friends (who's quite a veteran) to assemble. Until then, I need to choose the components so: what do you advice me to do? I don't even know what I'll need to build a pc. Treat me like I'm 5! Thank you very much.