Thanks for your reply. I new to this. I was thinking to buy some and hold them. But also I would love to know how to trade because I might trade them too.
Now I am thinking, if these are exchanges, then where my account/money will be hold?
Are these exchanges give you an option to open acct and save your bitcoin there or just to buy?
I will try to go to Kraken site now to find out more about it. Thanks a lot.