Connection Piece

So in this project I am focus on editors, cause they are the ones in charge of giving the form style on a book, and I will send them a formal letter to letting them know what are what students are expecting on a book, of all different topics, but I am going to focus on books about math and physics, cause this are the ones I more use, and I know what are the better books of this kind, they have to be step by step and lots of examples for each chapter.