I'm new to cyrptocurrency and heard that gpu's are obsolete for bitcoin mining and I hear gridcoin is a good alternative. How do I start mining? And how long long until I start to break even? Also, I have no idea how to use bitcoin calculators because I don't know the terminoligy. Can someone break this down http://pool.gridcoin.us/ProfitabilityCalculator.aspx
Specs: R9 390 6700k 725w PSU