I purchased a couple hundred bucks worth of TH's and have been doing well I should break even in a couple more months so the last 6 months will be profit. Remember that the difficulty is going up thought so way your options. You can also get free TH power if people use your referral code I have had no luck with that unfortunately.
Yeah thats what I'm little worrying about, the difficulty. I really want to start minig Bitcoin , for now I'm just minig ETH. I was thingink about hardwere mining but I don't have so much money right now.