Good response biondino, thats a good example of how a good player can garnish lots of information about an opponent and his hand if he's aware enough to take notice.

I would suggest though that you should take some decisive action on the river here. This minraise, minraise, minraise stuff isn't so good. Once he raises your bet you should make it at least $2.50 or even $3. He likes his hand, make him pay to show it down.

Staying calm just comes with experience, eventually you get so used to it that it takes effort to slow yourself down and think for a second because you're so sure you know exactly what to do in all situations.