a. get myself a wallet - I used CoinBase.
b. if you want to have your BTC work for you to earn *more* BTC get on an exchange where you can purchase gHz in a mining pool that will generate BTC as well as other types of cryptocurrency (e.g. Namecoin, Litecoin, etc...). I'm using CEX.io and so far have been very happy. I didn't have enough extra cash to purchase whole gHz, so I currently have 0.480 gHz (about 0.03744 BTC) and in about 8 hours I've earned 0.00042986 BTC - on less than half a gHz. I've also accrued some other cryptocurrency that gets mined alongside BTC.
That's just my experience, but so far I'm stoked!
Good luck
Cynthia