What components you need? cpu mobo ram and gpu?
PCPartPicker part list:
https://au.pcpartpicker.com/list/VVqQjc
Price breakdown by merchant: https://au.pcpartpicker.com/list/VVqQjc/by_merchant/
CPU: AMD - Ryzen 3 1300X 3.5GHz Quad-Core Processor ($165.00 @ Storm Computers)
Motherboard: ASRock - AB350M Pro4 Micro ATX AM4 Motherboard ($89.00 @ Shopping Express)
Memory: Kingston - HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 Memory ($138.00 @ Umart)
Storage: Kingston - A400 120GB 2.5" Solid State Drive ($68.00 @ PLE Computers)
Video Card: Asus - GeForce GTX 1050 2GB Expedition OC Video Card ($139.00 @ Shopping Express)
Case: Cooler Master - N200 MicroATX Mini Tower Case ($61.00 @ Skycomp Technology)
Power Supply: Corsair - CX (2017) 450W 80+ Bronze Certified ATX Power Supply ($69.00 @ Shopping Express)
Total: $729.00
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-01-01 22:01 AEDT+1100
Just use any external hdd for now for storage and when you save some money buy a larger drive. SSD is almost a must have for any modern rig.