Just buy some eth or btc and send them to your account at bittrex and start buy and sell all alt coins, or just buy bitbay.
I prefer to start buy eth, its just soooo much faster transfer (btc suck at transfer). But then u would have to sell them for btc and then buy bitbay.
Sorry I only just realised it was on Bittrex. I opened an account with BitBay and couldn't work out how to buy it.
On Bittrex I know my way around. Thanks.