Latex has one standard Book Class, but Book Class is designed specially for maths and science, to my opinion, if you are a novel writer instead of a scientist, you should choose Memoir Class, that is good for layout ficition books.
The standard classes provide point options of 10, 11, or 12 points for the main body font. memoir extends this by also providing a 9 point option, and options ranging from 14 to 60 points.
The class provides seven header and footer styles to choose, like those provided by the fancyhdr package.
The class comes with over 20 predefined chapter styles and provides 9 integrated sets of sectional heading styles, there are even a couple which use words instead of numerals for chapter numbers. For those who like putting quotations near chapter titles the epigraph environment can be used.
Sometimes, but particularly in novels, a sectional division is indicated by just leaving a blank line or two between a pair of paragraphs, or there might be some decorative item like three or four asterisks, or a fleuron or two. (A fleuron is a printers ornament looking like a leaf.)
The standard classes provide a very simple verse environment for typesetting poetry. This is greatly extended in memoir. Stanzas may be numbered, as can individual lines within a poem. There is a special environment for stanzas where lines are alternately indented. Also you can define an indentation pattern for stanzas when this is not regular as, for example, in a limerick where the 3rd and 4th of the five lines are indented with respect to the other three.
Footnotes can be as normal, typeset in two or three columns, or all run into a single paragraph.
Normally appendices come after the main body of a book. The Memoir class provides various methods for introducing appendices at the end, or you can place one or more appendices at the end of selected chapters.
Most packages work with the memoir class, the main exception being the hyperref package. If you wish to use hyperref, which dated before 2006/11/15, with memoir then you must use the memhfixc package after using hyperref. For example like:
\documentclass[...]{memoir}
...
\usepackage[...]{hyperref}
\usepackage{memhfixc}
...
\begin{document}
Memoir has three main logical divisions to a book, that correspond to three LaTex commands, namely \frontmatter, \mainmatter and \backmatter.
The \frontmatter declaration sets the folios to be printed in lowercase roman numerals, starts the page numbering from i, and prohibits any numbering of sectional divisions. Caption, equations, etc., will be numbered continuously.
The \mainmatter declaration, which is the default at the start of a document, sets the folios to be printed in arabic numerals, starts the page numbering from 1, and sections and above will be numbered. Float captions, equations, etc., will be numbered per chapter.
The \backmatter declaration makes no change to the pagination or folios but does prohibit sectional division numbering, and captions, etc., will be numbered continuously.
The memoir class lets you divide a document up into eight levels of named divisions. They range from book, part through chapter and down to sub-paragraph. A particular sectional division is specified by one of the commands \book, \part, \chapter, \section, \subsection, which is probably as deep as you want to go. If you really need finer divisions, they are \subsubsection, \paragraph and lastly \subparagraph.
\section[<toc-title>][<head-title>]{<title>}, <title> is used for the division title; <toc-title> is used for the ToC title; <head-title> is used for a page header title.
\book and \part are simpler:
\book{<title>}
\part{<title>}
Book and part headings always start on a new page with the book and part pagestyles, respectively. The typical book and part heading consists of the name (e.g., ‘Book’ or ‘Part’) followed by a number represented as an uppercase Roman numeral. There is a vertical space after which the title is printed. Finally a new page is started.