To train a dog, you must be more interesting than dirt.
Trek Project One
Trek FX 7.4 Hybrid
Oh, I don't expect to get rich. I expect to get free Y membership and a few bucks for the spin class and music that I know I will like at a volume that I can stand. Since my favorite instructor left the area, I now pay for a gym membership that I barely use (only the spin classes) for spin classes with bad music at way to loud a level.
IMHO . . . from teaching over ten years, the best "cycle" cert would be the real Spinning (Madd Dog) and then add on to that a couple of Sally Edwards certs so that you get the whole heart rate thing going perfectly. As for actual tests in Spinning . . . they have levels called STAR which are long written tests. Then there are plenty of add ons that are also written for particular areas of interest (CUs). The Y cert is a joke and waste of time as it does NOT cover points of FORM, counter indicated moves, music vs. program, HEART RATE, cadence to mention a few.