Welcome aboard Connor!
Looks like others have gotten you started here with some great links, but just wanted to echo that we're all here to help out with any questions you may have along the way!
Welcome! Others have already provided the links to get started, but don't be shy asking any questions that come to mind while you are planning or eventually building. That's what we are here for!
I had to resize my thighs (among many parts). If you do end up needing to, I found that it was more intimidating than difficult! I got some good advice in my build thread, linked below.