Bittrex "A digital Currency Stock Exchange"

Bittrex is one of the larger crypto to crypto exchanges offerign a large number of trading pairs into bitcoin - including all the major cryptos such as darkcoin, nextcoin and litecoin. They also offer NeuCoin and Ethereum.
Bittrex. Bittrex is a US-based cryptocurrency exchange headquartered in Seattle, Washington. ... The exchange is the thirteenth largest cryptocurrency exchange by daily trading volume, is renowned for the vast number of cryptocurrencies it has listed, and has a good reputation for its security.

How do I deposit coins to Bittrex?

Login and Click Wallets in the upper right hand of the site.
Search for the wallet you are going to deposit to.
Click the next to the wallet.
Click "new Address" to generate your address.
Please make sure to read the coins deposit instructions if they are available. ...
You can now send your coins to this address.