Thank you both very much for your responses. I really appreciate it. Few more questions:

1)So I cannot sell on Bittrex directly? So it is not like a stock trading account?

2)Can I convert it to Bitcoin, transfer to Coinbase account, and then do it?

3)What is "fiat"?

4)What would be the process of finding another user?

5)Is there a FAQ that I can read somewhere on this?

Thank you again very much for any response.