CPU or GPU mining is your best bet with a PC these day . minergate is good to use to get your feet wet till you know more, once you know wtf your doing find something better there are better miners but it is a very good miner to learn with and you may like it enough to keep using it . I didn't but Ive allso been mining for three years and it's been a lot of fun and made ROI on some gear i bought when i did mine BTC directly .. all my antminer S5 did ROI and i made some profit now you can't unless you have deep packets mining BTC .
I went back to GPU mining or video card mining .
like they said check out minergate or even this one https://www.nicehash.com/index.jsp?p=nhmintro
don't mine btc on a PC it might become a waste of time . mine alt coins and be paid with BTC, mining BTC directly with a PC is a bad idea you can do it but get nothing out of it .