If you have cheap electricity, get one of these, but make sure your electrical circuit can handle this:
http://www.spondoolies-tech.com/products/sp35-yukon-power-december-batch-1If you don't have 208V power outlet or higher, just skip mining altogether.
But if you fulfill this requirement, get one of these, mine for like 2 months, then resell the shit out of it...boom profit!
Otherwise, mining is really a zero sum game. Too many factors involved: delivery not on time if ever, pre orders are mostly scam/long con, electrical hazard leading to home or building fires, electrical and cooling costs to keep equipment from overheating, difficulty too high and pool luck variance, constantly monitoring and maintaining the equipment is a pain...
Alot of things have to bounce right for a miner to even come close to even, or just to minimize loss.
It's basically the opposite of the Hunger Games mantra "May the odds never be in your favor".