Field fare,
I don't have any official qualifications, but I am a health and safety advisor in my work in the construction industry, and have worked with tractors since I was eleven years old.
I have a 135 along with a range of other tractors and a jcb on my small holding, I also have a baler haybob, mower, plough, rotavator, potatoe planter/digger. etc. etc.
I'd be happy to spend a bit of time showing you the ropes and demonstrating/showing you how to use the machinery you are interested in, and it's pros and cons. If you are interested I'm in Northallerton, nth Yorkshire.
Cheers. Stu