Also, why not try a web search. I typed in - how to shear a sheep and found several videos.
I know one on one instruction is better, however, you might at least pick up some hints on how to hold the animal etc. - and you can watch as many times as you like.
I'd think any info would be of some value. No matter how you learn you must realize that it will depend on how much time you put in to the process. Practice, practice, practice is what it will take. Good Luck! Jean