https://medium.com/@cryptoweek/mining-101-a-step-by-step-guide-to-starting-your-own-profitable-mining-operation-6e154cd01a3d
that looks like a good guide for you but for your information if you wanna profitable in your mining and i thought use asic miner will be very profitable rather than GPU. some parties have created comparison and ASIC still give a lot of profit for asic miners.