Normally it's less than 10 misfires but there always seems to be a couple no matter what, like I said, especially at first start up, cold. What exactly is a misfire? Should I be concerned? Should I monitor something else at the same time that I am not thinking about?

How many misfire counts is normal?

Normally the misfire counts should be zero or close to zero for every cylinder. The OBD II system will usually NOT set a misfire code until the actual misfire count exceeds about two percent for any given cylinder.

Is it normal to have some misfires?

A misfire usually starts out as being merely a nuisance but if the causes aren't identified and corrected, it may result in your engine not starting or stopping altogether when you least expect it. Many system malfunctions can cause misfires or rough idling.