Bitcoin is a crypto currency, basically like an online currency.
1 BTC= Like 340ish (around there right now)
Bitcoin is kinda like a stock so it fluctuates back and forth throughout the day it. In the last month bitcoin has been all the way
up to almost $400 per 1 BTC and lately it has gone as low as $300 per 1 BTC. When youre buying you could buy it in fractions
like .1, .05, .5 etc it doesnt have to be a whole bitcoin.
You can buy bitcoin at. -->
https://www.coinbase.com/buy-bitcoin
(Debit and I think credit)
You can keep track of bitcoin price at -->
http://www.coindesk.com/price/
To hold your bitcoin youre going to need a wallet -->
https://blockchain.info/wallet
(could make one there)
Let me know if you have any questions id be glad to try and help you out.