Mining Litecoins with GPUs is no longer worth it since ASIC miners came out in the market. Try other altcoins. If I were you with RX480 I would try to mine Zcash or the new fork ZENcash. They both have a good concept behind them. Do your research though ... no one can guarantee you how to make money. You will make money, loose money and either learn from your mistakes or cut your loses and get out. That's what everybody does.