Just Creative has created a Free 27 Page Type Classification eBook that is a go to resource for designers.
Type_class_1
This book has been made to help you learn the 10 broad classifications of type. These are the basic foundations of what you need to learn to learn typography and it is essential for any designer to know how to classify type. This book goes through the 10 type classifications with a brief history as well as the key characteristics of each.
Type_class_2
To get your e-book visit http://justcreative.com/featured-articles/type-classification-ebook/