I learnt when I borrowed a unicycle from a friend when I was 13. I did not find it easy, but I learnt after hanging on to a few walls.
My big revelation was discovering Muni... that happened in 1986 when I went to the kamakaazi run at Mammoth... it was down hill for then on!
Unicycling is cool as you are always learning, it is a bit like bike riding. There are lots of types of bikes whether it is road, mountain, trials, BMX.. etc. Well actually when it comes to unicycles there are even a few more...
Unicyclists are always up for challenges, and the biggest mind fuck I know is one ridden by a good friend of mine. It is a 2 wheeler. Ok... in unicycle terms that means one wheel above the other not in front of each other! So you have this wheel that you are driving with a wheel above it. You are 8 foot in the air and as you pedal forwards the wheel goes back wards... hard? yes.. but this one is more! imagine the left hand crank is driven by the bottom wheel by a chain at a ratio of 1.3 to 1. So it is not even in sysc with the other crank, it is going back wards... or is it forwards! Ok mad, but fun.
You never stop learning on a unicycle that is one of great things about them.
R