What is this course for? Is this the first time you discovered that you were interested in horses?
A dandy brush is a stiff bristled brush used to clean mud and dirt off of the horse's coat. a.k.a a hard brush
A body brush is the same thing except the bristles are softer. a.k.a. a soft brush.
You use a hard brush before you use the soft brush.
And conformation is a term used to described how correct the physical appearance of horse is, as in its proportions and structure. Kinda like what they call "breed standards" for a dogs.