I think very few people try and "supplement their income" via Bitcoin mining these days. To see where you are in terms of income (not profit) and your mining hardware, take a look at:
https://bitcoinwisdom.com/bitcoin/difficultyOn the left hand side of the page, you'll see a set of boxes with 1 filled in for GH/s. You can over-type that box with 32, and all the other numbers will adjust. You'll see that your income will be about $.30 (30 cents) per week. If you spend 30 cents per week generating that, then you aren't really earning anything. That why the current bitcoin profitability discussion revolved around:
- Electricity cost where you are mining?
- The current price of BTC (i.e. how many dollars for BTC).
- The efficiency of your mining hardware (i.e. how many GH per watt of electricity used)
- The cost of the mining hardware.
- The upcoming "halving" (i.e. in roughly July the BTC reward per block will be reduced by half).
Don't be surprised if the picture pained by the number is pretty bleak in terms of earning money. Bitcoin is, and has been, become a more and more centralized production enterprise these days. While it's interesting to learn about and such, it's not likely to provide many folks much in the way of "profit".