What consern many PC builders the first time they're building is the first BOOT! Here's my advice for that: DO NOT WORRY! YOU WILL GET TROUGH!
Belive me, I've been there when I was so worried the system would not work or that I did not know what I was goin to do in the BIOS (Basic Input/Output Service). Make your self clear on what you do there. Building up lots of information helps alot!!!
Here is some other pages about what you do after first boot:
