I made several novice errors (disconnected SATA cables; other general confusion over cabling, etc.), but finally finished this thing. I went off of Hazaro's useful spreadsheets from the NeoGaf PC builder thread. Also watched dozens of tutorials, especially Tested's vids, which were entertaining. As commenters have suggested, I need to get back in there and clear up the cabling mess. Slowly, I'm figuring out how to get the most out of this machine (eliminating screen tearing, upping FPS, etc.).
I encountered a problem with MSI's onboard wi-fi. It's deadly slow. I added the ASUS PCE-N15 wireless adapter, and it's...a little bit faster. Wondering what I could do to improve download speeds...my three year old laptop's wi-fi is fast, so what's the deal? I'll have to do some research to resolve this issue. Speaking of the adapter, it didn't quite fit inside of this case; the mounting screw (which attaches the card to the case) wouldn't go in when I plugged the card securely into the motherboard.
Adding the aftermarket heatsink was a bit of a pain, due to the center, X-shaped mount thing not quite lining up initially. Somehow I got it screwed onto the motherboard. I wasn't sure how to get my WD hard drive, or my game controller recognized by the PC...I finally figured it out by searching online. I have a lot to learn.
I'm a reformed console gamer, and I always wanted to see what I'd been missing for years. I'll be catching up on some games I haven't played yet (Witcher series, Crysis 1-3, Jagged Alliance, Diablo 3, Torchlight 1-2), including some upcoming new RPG's (Project Eternity, Wasteland 2, Shadowrun Returns, Torment 2: Numenera). Also, I will once again delve into Skyrim, modded and amazing-looking (unlike my f'd up, buggy PS3 version). And I'm waiting for the next Fallout to hit. Will probably let this do some Folding at Home, too. I hooked my rig up to a QNIX QX2710 LED Evolution ll, 27 inch 2560x1440 PLS, and ran Unigine benchmark tests...astounding. Someday I'll overclock the CPU, as soon as I learn how to do it safely. ;)