I'm sure there are classes. You can also watch your groomer and learn a few things. Or you can look at videos and step-by-step instructions online.
How to groom a cow.
No you can learn on the job.
You should take sketching classes or drawing classes if you would like to learn how to draw.
ESL classes are classes for people who want to learn a second language. Many of the people in ESL classes have English as their secondary language so they are taking it to learn more about it.
You learn to take blood. You learn how to deal with patients and use an IV.
One can learn about day trading classes at Pioneer Pacific. Pioneer Pacific is a college and if one visits there, the person can inquire about the day trading classes.
Go to classes
Nothing
There are specific classes you can take to learn more about refrigeration and how refrigerators work at your local community college or YMCA / YWCA center.
If you are looking for more information on are there classes to learn how to do power point presentations, the best place to look is on www.microrao.com/powerpoint.htm
There are classes to learn about childbirth education in Thailand. But you would have to do some searching because it is very hard to find anything about it.
In most first aid classes you will learn how to make a sling and treat someone if they break something.