
By Victor Eijkhout (307 pages)
TeX by Topic – a TeXnician’s Reference is a manual designed to help the reader master the TeX typesetting language. It’s a companion to tutorial guides on the system. The book provides original, practical ideas, and is an invaluable information source that will give the TeX user the essential insight needed to solve TeX problems, write LaTeX macros, and other customizations of TeX.
It includes a thorough cross reference system.
This book provides a wealth of information on:
 The Structure of the TeX Processor – a global picture of the way TeX operates
 Category Codes and Internal States – describes how TeX reads its input and how the category codes of characters influence the reading behaviour
 Characters – treats character codes, and the commands that have access to them
 Fonts – describes how fonts are identified to TeX, and what attributes a font can have
 Boxes – treats box registers, aspects of boxes, and the way their components are placed relative to each other
 Horizontal and Vertical Mode – looks at the horizontal and vertical modes, the kinds of objects that can occur in the corresponding lists, and the commands that are exclusive for one mode or the other
 Numbers – covers integers and their denotations, conversions, allocation and use of \count registers, and arithmetic with integers
 Dimensions and Glue – treats all technical concepts related to dimensions and glue, and explains how the badness of stretching or shrinking a certain amount is calculated
 Rules and Leaders – explains how rules and leaders work, and how they interact with modes
 Grouping – what sort of actions can be local, and how groups are formed
 Macros – explains how TeX macros work
 Expansion – explains the commands connected with expansion with examples
 Conditionals – an inventory of the large repertoire of conditionals
 Token Lists – the only type of data structure in TeX
 Baseline Distances – treats the computation of interline glue
 Paragraph Start – explains the sequence of actions and how TeX’s decisions can be altered
 Paragraph End – explains the mechanism, and the role of \par
 Paragraph Shape – discusses the parameters and commands that influence the shape of a paragraph
 Line Breaking – treats line breaking and the concept of ‘badness’ that TeX uses to decide how to break a paragraph into lines, or where to break a page
 Spacing – explains the rules by which TeX calculates interword space
 Characters in Math Mode – explains the concept of math codes, and shows how TeX implements variable size delimiters
 Fonts in Formulas – discusses how font families are organised, and how TeX determines from what families characters should be chosen
 Mathematics Typesetting – looks at TeX’s two math modes and four styles
 Display Math – explains how surrounding white space is calculated
 Alignment – looks at the general alignment mechanism for making tables
 Page Shape – treats some of the parameters that determine the size of the page and how it appears on paper
 Page Breaking – examines the ‘page builder’
 Output Routines – performs the final stages of page processing
 Insertions – TeX’s way of handling floating information
 File Input and Output – discusses the ways in which TeX can read from and write to external files
 Allocation – treats the synonym and allocation commands, and discusses guidelines for macro writers regarding allocation
 Running TeX – treats the run modes of TeX and other commands associated with the job being processed
 TeX and the Outside World – dvi files, formats, IniTeX, font and format families, Computer Modern typefaces, and web
 Errors, Catastrophes and Help
 The Grammar of TeX
 Glossary of TeX Primitives
 Tables
TeX by Topic has been released by the author under the GNU Free Documentation License, Version 1.2 or any later version. 

By Paul W. Abrahams with Karl Berry, Kathryn A. Hargreaves (393 pages)
TeX for the Impatient is a handbook that arose from the need to help technical writers learn TeX more quickly and once having learned it, to find fast answers to common questions. The book contains tutorial and reference information on all features of both plain and primitive TeX.
Clear, concise, and accessible, this book is organized for easy retrieval of information, thoroughly indexed, and carefully designed for learning by example. The book is targeted at scientists, mathematicians, and technical typists.
The book covers the following topics:
 Using TeX – shows how to prepare an input file, and how TeX works
 Examples – entering simple text, indentation, fonts and special characters, interline spacing, and more
 Concepts
 Commands for composing paragraphs – including characters and accents, selecting fonts, uppercase and lowercase, interword spacing, centering and justifying lines and more
 Commands for composing pages – such as page breaks, page layout, insertions, and more
 Commands for horizontal and vertical modes – producing space, manipulating boxes, retrieving the last item from a list, rules and leaders, and alignments
 Commands for composing math formulas – simple parts of formulas, superscripts and subscripts, compound symbols, equation numbers, constructing math symbols, producing spaces and more
 Commands for composing general operations – converting information to tokens, macros, registers, input and output, and more
 Tips and techniques – such as correcting bad page breaks and line breaks, avoiding excess space around a display and after a paragraph, drawing lines and more
 Making sense of error messages
 A compendium of useful macros
 Capsule summary of commands
This book is released under the GNU Free Documentation License, Version 1.3 or any later version. 

By Norman Walsh (522 pages)
Making TeX Work provides comprehensive coverage of how to build, run, and use TeX to best advantage on your platform.
This book teaches the reader:
 How to assemble the software you need to build and install TeX on all common platforms: UNIX, DOS, Macintosh, and VMS
 How to get TeX and its associated tools from public domain and commercial sources (a complete buyer’s guide)
 How to select and use the tools that let you incorporate graphics into your documents and create bibliographies, indices, and other complex document elements
 How to install and use fonts to best advantage, including PostScript and TrueType fonts and LaTeX’s New Font Selection Scheme (NFSS)
Making TeX Work has been out of print for years. The publisher has released the book under the GNU Free Documentation License. 

By Michael Doob (97 pages)
A Gentle Introduction to TeX is billed as a manual for selfstudy. The purpose of this manual is to start from the very beginning and to move towards these more complicated situations. No previous knowledge of TeX is assumed by the author. By proceeding a section at a time, greater varieties of text can be produced.
The contents of the book:
 Getting Started
 Characters requiring special input such as { } % &, accents, typesetting letters from languages other than English, quotes, different fonts
 Make text have different shapes or sizes – examines units, page shape, paragraph shape, line shape, footnotes, headlines and footlines, overfull and underfull boxes
 Groups
 Provides the basic for creating beautiful typeset mathematics – symbols, fractions, subscripts and superscripts, roots, lines, delimiters and more
 Aligning text – tabbing environment, horizontal alignment environment
 Create new control words
 Debugging – looks at some typical errors and the messages generated
 Topics that allow TeX to be used with more flexibility or efficiency
 List of the control words used in this book
The book is published under a free license. 

By D. R. Wilkins (40 pages)
This is an introductory text to the world of TeX.
Chapters explore:
 Introduction to Plain TeX
 Producing Simple Documents using Plain TeX
 Mathematical Formulae using Plain TeX
 Further Features of Plain TeX
No license is specified. 

By Victor Eijkhout (234 pages)
The Computer Science of TeX and LaTeX uses the TeX and LaTeX system to provide an introduction to a number of computer science topics. This book is based on the lecture notes of a course taught at the University of Tennessee in the fall of 2004. This is a `topics’ course in computer science, using TeX and LaTeX as motivation and examples.
The contents of the book covers:
 The use of LaTeX for document preparation, LaTeX style file programming, and TeX programming.
 Learn the basic of language theory and parsing, and apply this to parsing TeX and LaTeX
 Looks at dynamic programming, TeX paragraph breaking, TeX’s line breaking algorithm, nondetermininistic polynomial time (NP) completeness, basics, complexity classes, NPcompleteness, page breaking, TeX’s page breaking algorithm, theory of page breaking
 Fonts, explores Bezier curves, Parametric curves, piecewise curves, curve plotting with gnuplot, raster graphics, rasterizing type, antialiasing
 TeX’s macro language – this is an unfinished chapter
 Character encoding including ISO 10646, Unicode, UTF8, font encoding, aesthetics, the fontenc package, and more
 Software engineering
 Literate programming
The book is released under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) license. 