Nick you might try this. The time signature for all two steps is 4/4 or sometimes called common time. So each measure has four beats or each beat is a quarter note. You play the bass on each of these beats starting with the lower button and then alternating with the top button. Set your metronome (included I believe in most music software such as Audacity, Slowdowner) up to beat four times in a measure and play bass along with it. I have found even with seasoned 'beginners' that the bass rhythm can be an after thought. Also, if you learn to read music this all becomes simple to follow.