>>85242970>>85243167PCPartpicker is a good resource because it lets you see your whole build at once and automatically checks for compatibility issues, so you can't mess up by choosing the wrong type of CPU for your socket. One good (and bad) thing about this hobby is how well-documented and analyzed everything is, there's plenty of guides out there on how to put everything together when you're ready. I will say, don't get memed into going all-out and buying incredibly expensive overclockers parts for your first build - you don't need 'em - but don't cheap out, either. Come up with a rough idea of what you want your PC to do, a rough budget, and adjust as you do more research. Once you get the hang of things, if you want to upgrade in the future you can go more high-end then.
Apart from that it's basically just little tips and tricks. Buy a modular PSU. Remember the standoffs under the motherboard. Make sure you seat all your components correctly, including the CPU and especially the RAM and video card like the other anon said, they can take more force than you realise. Remember to take off the interface protectors on your parts before you install them. Don't go liquid cooling or AIO cooling, they're a complete meme.
Good luck!
You can always come back and ask questions if you need to, there's usually one or two Ruffians who know what they're talking about 