I recently purchased the book “From Beginner to Expert” by the german unicyclist Sebatian Hoher, and found it to be the best tuition book I have read.
First printed in 1991, it is out of date equipment wise, but the basic instruction is excellent and the clearest I have come across.
There is no street or muni due to when it was written.
No longer in print so far as I know, but loads of used copies available (certainly in the UK). My copy cost £3 including delivery.
Plenty of detailed text on the various learning phases.
Amazon link below.
Yeah, posting the link to the German reviews was mostly just an excuse to mention the strike at Amazon in Germany. Imagine that, the Christmas elves on strike! Oh well, it probably won’t last long. If their leaders are anything like the ones in my union, they are probably in bed with Santa…