When building your computer yourself, especially with a budget in mind, you really have to think price to performance. Probably one of the first things you're going to have to choose is going with AMD or Intel. I cannot help you with this decision due to being biased towards Intel. You do want to spend more money on your graphics card then your cpu. Your gpu is most likely to bottleneck first.
Some links that may give you an idea.
Understanding bottlenecking:
http://www.youtube.com/watch?v=TGdo75gasaQCpu to Gpu Performance ratio:
http://www.youtube.com/watch?v=qIT9uLDjZcgPrice to Performance:
http://www.youtube.com/watch?v=ShgbxifNv50Build your own computer series:
Part 1:
http://www.youtube.com/watch?v=lPIXAtNGGCwPart 2:
http://www.youtube.com/watch?v=d_56kyib-LsPart 3:
http://www.youtube.com/watch?v=RxaVBsXEiokI have quickly put together a build that I wouldn't really recommend, though would suffice.
1 x Intel Haswell i7-4770K LGA1150 3.5GHz Processor BX80646I74770K 371.73$
1 x Asus ROG MAXIMUS VI EXTREME LGA1150 DDR3 Motherboard ATX 423.19$
1 x Corsair Dominator Platinum 16GB 1600Mhz DDR3 Memory CMD16GX3M2A1600C9 249.68$
1 x Samsung 840 EVO 120GB SATA 6.0 SSD MZ-7TE120BW 118.77$
1 x Asus GTX 770 DirectCU II Video Card GTX770-DC2OC-2GD5 375.90$
1 x Integrated 7.1 Channel Audio 5.25$
1 x Pioneer BDR-208DBK 15x Internal BD/DVD/CD SATA Optical Drive 72.32$
1 x Corsair Hydro Series H100i Intel/AMD High Performance Liquid CPU Cooler CW-9060009-WW 120.59$
1 x EVGA SuperNOVA NEX750B 750W 80PLUS Bronze Modular Power Supply 120-PB-0750-KR 111.91$
1 x Cooler Master HAF 912 RC-912-KKN1 Mid Tower 69.40$
1 x Complete assembly and testing of the system includes 6 months warranty 75.00$
Total Price : 1993.74$
This is only to give you an idea.
You can try putting your own together here:
http://www.pcczone.com/pc-builder/Hope this helps~
` James