Well there is no way without risk to start earning from 6$.But i suggest to go with investing in btc lending site like btcjam.com which is legit.Don't play your money in gambling or invest in HYIP sites(sites like in investor-based games section)as they have a very high risk and you may lose your money.Also you can earn with 0 risk by koining a signature campaign and be a constructive poster throughout in the forum.