Nope you can only catch pokemon on the maps at the moment, you can battle pokemon in the battles section to the left hand side on creed.

i have two refferals but i dont know how to get the coins can u plz tell me plzzzzzzzzzzzzzzz ?

"May 13, 2012 2:09:31pm"[you must login to view links]
"For every time someone registers in your referer link, you will recieve 100 coins added to your coins case.
These referrals must have a different IP and must be active before being credited, usually takes no more than 12 - 16 days."