The best way to earn bitcoins without mining

[neurobox]

If you have some cash flow already, you can invest directly in startups and other funds in various markets, provided you know what you're doing. There's some risk, and if you don't mind risk, you can always try lending (e.g. https://btcjam.com/faq/general)

[Shogen]

Sells your goods and services for bitcoin.
Get your activity up, and join a sig deal.

[Bonam]

- Offer a product/service for sale for bitcoins here on the forums
- Start a bitcoin business
- Earn USD (or other national currency) and then use it to buy bitcoins
- Participate in signature advertising deals
- Carefully research and invest in bitcoin securities (not risk of losses if you do so)
- Trade back and forth between BTC and USD (or other currency) on an exchange (note that only relatively few people can do this profitably)