Need Experience Rig Builder Advice!

I bought ssd samsung 850, you have no idea how much problems I had with it because it was connected to an usb adapter. I remember when I bought a m.2 960 evo, all I gotta do was plug it in, and attach a usb with window 10 in it, and everything was set.

Need advice!
1. Is there any cheaper ssd out there that is as easy to install as m.2 960 evo?

2. any recommendation for ddr4? I want easy to install, and cheap, and good enough for mining 6gpu

3. cpu recommendation? I don't know what is cheap on the market and at the same time compatible with a cheap motherboard that can connect 6 gpu.

4. motherboard recommendation? I don't know what is cheap on the market and at the same time compatible with a cheap cpu that can connect 6 gpu.

5. gtx 1070 or amd 580 or anything, for 6 gpu mining rig

6. Do you guys use any desk application? can it link linux device?

7. xd I know im asking a lot of question, if you guys can't help me with an in depth guide T_T. can link me a page or anything. need help T_T!