CPU
Intel - Core i5-8400 2.8GHz 6-Core Processor
Motherboard
ASRock - Z370 Pro4 ATX LGA1151 Motherboard
Memory
GeIL - SUPER LUCE 16GB (2 x 8GB) DDR4-3000 Memory
Storage
Hitachi - Deskstar 7K2000 2TB 3.5" 7200RPM Internal Hard Drive
Video Card
MSI - GeForce GTX 1070 8GB Video Card
Case
NZXT - S340 (Black) ATX Mid Tower Case
Power Supply
EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply
Total: $1047.80 (after cashback/rebates) - PCParktpicker.
Upto date machine though I'd personally wait a little longer for the 1070ti AiB cards to launch. Its only a little more expensive than an OG 1070 and offers similar performance to of a GTX 1080.
You could also save another $50-60, by waiting for the more budget friendly B360 motherboards to launch. Which is probably a better match for that non overclockable cpu.
Building PC's at first may seem daunting, but tbh theres tonnes of step by step tutotials and guides to help you. If not, I'm sure you'd be able to find a local PC shop who can assemble it together (like what other people have said) for a small cost.
