1. you need to read about hash, marketplace, sell coins.

2. you need a buget.

3. buy strong GPU (Nvidia 1050TI, or AMD RX 470/570) Motherboard (ASROCK H81) RAM (4 GB or 8 GB) PCU (Intel Haswell Refresh, Pentium Dual-Core G3260 3.3GHz box), Power 1000 W, SDD 60 GB or more.

4. Mining Software.

GoodLuck