First Time Building My Own Gaming PC

This is my first time building a computer and to be honest ,I don't really know much about the different parts. Like I know the functions of each part but don't know how to tell the difference from a good or bad processor/video card/motherboard. So basically, I searched other builds on Youtube/Google and came up with this build. I'm trying to build a somewhat future proof computer that is capable of playing most games in high/ultra settings with an average of 60fps+.

Total Price:$1,466.91

Processor: Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) Quad-Core Processor ($329.99)
Motherboard: Asus SABERTOOTH Z77 HDMI SATA 6Gb/s USB 3.0 ATX ($224.99)
RAM: CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) ($75.99)
Graphics Card: GIGABYTE GV-R787OC-2GD Radeon HD 7870 GHz Edition 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card ($239.99)
Hard Drive: Western Digital WD Black WD1002FAEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ($109.99)
Case: NZXT Phantom 820 CA-PH820-M1 Matte Black Steel / Plastic ATX Full Tower Computer Case ($249.99)
Power Supply: CORSAIR HX Series HX850 850W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply ($129.99)
Cooling: ZALMAN CNPS9900MAX-B 135mm Long life bearing CPU Cooler Blue LED ($85.99)
DVD Burner: ASUS DVD Burner 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM Black SATA Model DRW-24B3ST/BLK/G/AS ($24.99)