I have never built a PC before, but a few of my friends have and they tell me that it's something I should definitely be able to handle. I want to be able to play current-gen games, though they don't necessarily need to be maxed out to the highest settings. This is the current build that I'm looking at:
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory $44.99 @ Newegg Canada
Hard Drive: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive $48.99 @ Buy.com Canada
Video Card: MSI GeForce GTX 560 Ti 2GB Video Card $265 @ DirectCanada
Power Supply: OCZ ZT Series 750W ATX12V 20/24PIN Modular 80+ Bronze Active PFC Power Supply $89.99 @ Canada Computers
Optical Drive: LG GH24LS70 DVD/CD Writer $23.76 @ DirectCanada
I don't have a case picked out, though I've been eyeing the HAF 922. As this is my first time, I would like to get whatever case makes it the easiest on me to install. I'm not absolutely married to the other items in my build, so if you guys have any suggestions for things that I should add or take out, I'm definitely open.
Both have front USB 3.0, though keep in mind the K63 uses a passthrough system that requires you to run a cord out of the back of the case and plug into one of your mobos rear USB 3.0 connectors. The 690 II, while all of the new cases are shipping with the new faceplate (that have USB headers, so they install inside the case) there might still be old inventory out there that is the usb 2.0 front. Just double check whomever you're purchasing with.
More importantly, both offer tool-less design that makes it VERY easy to install every single part of the build.
You might want to add a CPU heatsink and fan, instead of using the stock Intel one. The benefit is that your CPU should stay cooler during the intensive games. CM Hyper 212+ works well for me and is quite cheap for how effective it is. There's an updated version that was released a few months ago.