Nice goin'! Putting words into action is something lots of people don't seem to be able to do. Don't worry about getting a cadence counter. If you watch experienced rides you'll probably notice they're pedaling at a faster rate than you. If you have a cycle computer or a watch with a sec hand you can easily tell your cadence. Every time your left pedal comes down = 1 revolution. Most experienced riders pedal from the high 70s to the upper 90s. There is no right or wrong here. As you become more experienced you'll find your sweet spot. Don't let anybody tell you you should be pedaling at least X revs/minute. They don't know you.