Just be aware of the cost of mining bitcoins. Mining is hard on your hardware and don't be surprised if your electric bill is a bit higher than normal.
You can also purchase bitcoins from people, usually at their current market value. I'd also do some research on bitcoin as it's value can fluctuate wildly. This is just one of many articles on bitcoin.
http
/www.cnn.com/2013/04/11/opinion/angel-bitcoin-currency/index.html?iref=allsearch
Anyhow, before you jump into any investment you should do some serious research.