He has several videos of putting together PCs ranging from less complex to an overkill gaming PC. He talks about how to handle the MoBo and makes it really comforting and simple. I highly recommend watching. Even if you already know how to build a PC, he's so entertaining and informative that I feel like you gain something from each video regardless.
League of Legends IGN: Ellista Heroes of the Storm IGN: Ellista#1823