I would like to buy some Monero coins, but have not any idea how to do it. Did some googling, but didn't find any good help. If anyone could help! Thanks for any help!
Poloniex.com has the biggest volume. There are other exchanges on the OP of monero main thread.
I like Poloniex. Because of the volume, bid/ask spreads are a bit lower. Polo also has markets denominated in XMR, so that you could buy NXT, for example, with XMR.
Seems like there might be opportunities for arbitrage between BTer and Polo, but I've never really tried it. I suppose you could buy on BTer and move it to Polo, but if you're new to it, I think you're better off just opening an account at Poloniex.
One other thing I'll add...for me, anyway, and maybe I was just tired at the time, I had a hard time figuring out how to transfer BTC to Polo. You have to go to "Balances" and scroll down a ways to see BTC. Then you'll have to hit the button to generate a new BTC address. Then transfer to that new address.