One of the questions was what is cadence. It is how many times your feet go round a complete circle in a minute. Also used in music to describe the pace of the tempo. Could also describe walking or running depending on stride length and speed.

Beginners shouldn't worry about cadence too much. Eventually you will find a cadence that does not leave you gasping for air while you legs feel chipper, or your thighs burning while you are breathing through your nose.

You may want to do some core workouts, because that is one thing you get on a board that will suffer on the bike.