I built computers for my close family and some friends, and myself. It's pretty simple once you understand it. If buying new parts, 100% look at the 'frequently bought together', lets you see what other people who did the research already got recently. lol
@maturedragon try checking the parts you are getting on the other site and cross reference amazons frequently bought together to get a good idea of what to buy on the other site
It's okay, but shop around, you can often buy ready assembled for around the same money. Building yourself only makes sense if you want to buy specific parts