A relatively good way may be signature campaign, for people who are starting their new journey into btc world, because it can helps them a lot to earn btc without complications. I also suggest to sell service to other members like offering your programming skills or web designing and get paid on bitcoins.
I hope to have a programming skills but unfortunate I am just an accountant, I think my skills are not in demand in here but I could say I am quite good in ready numbers so trading is my game, that's how I grow my money.
Then concentrate in trading, no point in learning something that is completely out of your expertise, learn how to trade and if you already know how then you only need some starting capital and you are done.