If your interested in mining Zcash with a PC, you should stop right now. You will LOSE money from electricity costs. ZEC is a ASIC coin now, you cant mine it with a PC. Your MUCH MUCH better off mining a GPU(PC) coin, not a ASIC coin.
Check that website to get an idea of what coins you can mine with a PC. You will make alot more money mining a GPU coin vs trying to mine a ASIC coin. You will make only pennys mining a ASIC coin, if your even lucky enough to make a penny.
Also you said you want to mine without a pool. With only 1 GPU, you cant. You will make ZERO money trying to solo mine with a GPU. You will not find ANY blocks, you are better off buying a lottery ticket at the store and trying to win the jackpot, im not kidding.
Honestly, just by the question you are asking, I would recommend doing more research on GPU mining. There is alot of good youtube videos that will walk you through all the steps and is a good place to start.