My first ever build, I tried to keep it under $1000 without sacrificing on any parts. Had a video card, but realized it would be better to get a better overall build instead of giving up in some areas, so I removed that and built a better one overall. I know it's not perfect, not NEAR perfect, and I know I gave up in some areas, but that's what's expected from a 13 year old, I guess XP
Overall, the build is solid. I love the case, the CPU fan is dead silent (Though I had SERIOUS trouble mounting it on, it took me 3 days :O), the SSD is snappy, the motherboard is drop dead incredible, and the power supply is pretty great, too. I don't regret a single thong, I love the build, it's just awesome :D
I don't know what's the deal with Windows 8.1, but I love it. I already have a Microsoft Surface RT (Which I'm typing on right now) that's equipped with Windows 8.1. I just downloaded a simple feature called Classic Shell, which basically eliminates the app screen and gives back the start button from Windows 7.
And I'm going to be honest, I doubted gaming on Intel HD 4600 graphics. But I'm taken back by how much better it is than people make it out to be. Probably because my whole life I've gained on a console, and the because I've never experienced what it is like having a graphics card. But I'm running Skyrim with over 70 mods at 720p on a mix of Low/Medium settings and I usually stay at 40 FPS. I kid you not. And that's with FRAPS running (Which is pretty demanding).
The only problems I had were trying to get the fan mounted and getting the IO shield on (Which, unfortunately, I could not). Other than that, it was a smooth ride.
All on all, the system is fantastic. I found more pride in myself for building it. I also found it quite funny how my parents/relatives doubted that a 13 year old could build a computer. Right now, I'm saving up for a video card, but also am waiting for an HDD that hasn't arrived from Amazon yet. All in all, it was worth it :)
EDIT: Lol, put in the wrong prices for the RAM and Motherboard. RAM was $95 and motherboard was $180 with $40 discount :O
EDIT 2: Everybody, please ignore the Canada prices. The build was $855 USD. NOT CAD.