Fonts
Another important consideration when formatting your book is font selection. The book font, or style of characters makes a difference in how easily your book is able to be read by others, and so does the font size.
A common font choice for text is Times or Times New Roman, in an 11-pt or 12-pt size. This serif font has been shown time and again to be easy on the eyes. For your titles, subtitles, and other “display text,” a sans-serif such as Arial is a good choice. Don't forget to choose the right fonts for your book cover!
It’s a good idea to use serifs in your body copy because it’s easier to read at a smaller size. Sans-serifs in your display type is usually larger and set off by white space.
Breaks
A page break is a separation that indicates a new chapter (or recipe in a cookbook, and so on). Insert a page break after each chapter or unit in your book so the new chapter begins at the top of a new page. You can add multiple page breaks or use section breaks to have each chapter start on a right-hand, or odd-numbered page. This is standard formatting practice for books.