you bought a computer with 6 gpus to mine, but you have not done the slightest research before? 
I has slightly minimal knowledge on mining, as far i as know, guess the few things that i am confused with are
- Configuration of mining with those commands
- Differences of Mining Software like Can i mine all coins with the Ethdcrminer?
- How to OC/UV to get the best out of it
- and some other, usually those that are likely to be technical
Because that guy just flash the bios, pre config everything for me where i just need to put in my address