Reading putts - an art in itself?

Yesterday played a Texas Scramble, four of us playing in pairs usual rules picking best shot from two after each shot.
Watching my playing partner putt first I had amazing results with my putting, sinking three longish putts. This made me think, just how good (or bad) am I at reading putts? Given I haven't putted that well in ages it made me think that usually I must be pretty poor at reading putts.

Question - is it an acquired skill? Has anyone had lessons in this?