What parts should I get?

Don't bother with those old obsolete A10 APUs when much newer and far superior Ryzen APUs exist.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 3 2200G 3.5GHz Quad-Core Processor ($93.99 @ Amazon)
Motherboard: ASRock - AB350M Micro ATX AM4 Motherboard ($55.98 @ Newegg)
Memory: G.Skill - NT Series 8GB (2 x 4GB) DDR4-2400 Memory ($80.98 @ Newegg)
Storage: Crucial - MX500 250GB 2.5" Solid State Drive ($69.89 @ OutletPC)
Case: Rosewill - SCM-01 MicroATX Mini Tower Case ($19.99 @ Amazon)
Power Supply: Corsair - CX (2017) 450W 80+ Bronze Certified ATX Power Supply ($23.98 @ Newegg)
Total: $344.81
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-07-08 19:36 EDT-0400