The bitcointalk forum remain to be the best place for non-experienced user to start with cryptocurrencies. Here some useful ways that may help you earn ethereum or some cryptocurrencies which you could swap to ether by joining any trading platform:
Join a signature campaign: find them in boards  Services ,  Bounties (Altcoins) but you have to rank-up first to Junior member.
Sell physical or digital goods: find them in boards  Digital goods ,  Goods
Offer your services in the Services board.

You can also buy some hardware and do Mining.