Enlaces a recursos que se pueden descargar gratis de Internet sobre programación:

Meta-Lists

• 25 Free Computer Science Ebooks
• Book Training - On Video
• Cheat Sheets (Free)
• CodePlex List of Free E-Books
• Free Tech Books
• Galileo Computing (German)
• How to Design Programs: An Introduction to Computing and Programming
• Microsoft Press: Free E-Books
• MindView Inc
• O'Reilly's Open Books Project
• Sofware Program Managers Network
• TechBooksForFree.com
• Theassayer.org
• Wikibooks: Programming

Graphics Programming

• DirectX manual (draft)
• Learning Modern 3D Graphics Programming (draft)
• GPU Gems
• GPU Gems 2 - ch 8,14,18,29,30 as pdf
• GPU Gems 3
• Graphics Programming Black Book
• ShaderX series

Language Agnostic

• 97 Things Every Programmer Should Know
• Algorithms and Data-Structures (PDF)
• Algorithms (draft)
• The Architecture of Open Source Applications
• The Art of Unix Programming
• Best Kept Secrets of Peer Code Review
• Binary Trees
• The Cathedral and the Bazaar
• Clever Algorithms
• Communicating Sequential Processes (PDF) - Tony Hoare
• Compiler Construction (PDF)
• Computer Musings (lectures by Donald Knuth)
• Data Structures and Algorithms: Annotated Reference with Examples
• Database Fundamentals (PDF)
• Data-Intensive Text Processing with MapReduce (PDF)
• The Definitive Guide to Building Code Quality
• Designing Interfaces by Jennifer Tidwell
• Digital Signal Processing For Engineers and Scientists
• Domain Driven Design Quickly
• Don't Just Roll the Dice
• Essentials of Metaheuristics by Sean Luke
• Essential Skills for Agile Development
• A Field Guide To Genetic Programming
• Flow based Programming
• Foundations of Computer Science - Al Aho and Jeff Ullman
• Foundations of Programming
• Getting Real
• Getting started with Open source development (PDF)
• The Great Tree List Recursion Problem
• Guide to the Software Engineering Body of Knowledge
• How Computers Work
• How to Design Programs
• How to Think Like a Computer Scientist
• How to Write Parallel Programs
• How to write Unmaintainable Code
• I Am a Bug
• An Introduction to the Theory of Computation
• Introduction to Functional Programming (class lectures and slides)
• Introduction to Information Retrieval
• Is Parallel Programming Hard, And, If So, What Can You Do About It?
• Learn to Program
• Let's Build a Compiler
• Linkers and loaders
• Linked List Basics
• Linked List Problems
• Mathematical Logic - an Introduction (PDF)
• Matters Computational
• Mining of Massive Datasets
• NASA Manager Handbook for Software Development (PDF)
• NASA Software Measurement Handbook
• Object-Oriented Reengineering Patterns
• Online Course Materials
• OO Design
• Operating Systems and Middleware (PDF and LaTeX)
• Patterns and Practices: Application Architecture Guide 2.0
• Patterns of Software: Tales from the Software Community (PDF)
• Planning Algorithms
• PNG: The Definitive Guide
• Pointers And Memory
• Producing Open Source Software
• Programming Languages: Application and Interpretation
• Programming Methodology
• Programming Pearls
• Project Oberon (PDF)
• Seamless Object-Oriented Software Architecture
• Security Engineering
• Structure and Interpretation of Computer Programs
• Summary of the GoF Design Patterns
• The Little Book of Semaphores
• The TCP/IP Guide
• Think Stats: Probability and Statistics for Programmers (PDF, code written in Python)
• Type Theory and Functional Programming
• Understanding IP Addressing: Everything you ever wanted to know (PDF)

Android

• Building Android Apps with HTML, CSS, and JavaScript
• Learning Android

Autotools

• GNU Autoconf, Automake and Libtool

ASP.NET MVC

• NerdDinner Walkthrough

Assembly Language

• Programming from the Ground Up (PDF)
• Paul Carter's Tutorial on x86 Assembly
• Software optimization resources by Agner Fog

Bash

• Advanced Bash-Scripting Guide
• Bash Guide for Beginners by Machtelt Garrels
• Lhunath's Bash Guide
• The Command Line Crash Course (also a Powershell reference)

C / C++

• Beej's Guide to Network Programming
• Beej's Guide to C Programming
• The C book
• C++ Annotations
• C++ GUI Programming With Qt 3
• CS106X Programming Abstractions in C++
• Essential C
• Introduction to Design Patterns in C++ with Qt 4 (PDF)
• Learn C the hard way
• Matters Computational: Ideas, Algorithms, Source Code, by Jorg Arndt
• The new C standard - an annotated reference
• Object Oriented Programming in C (PDF)
• Software optimization resources by Agner Fog
• Thinking in C++, Second Edition
• Also see: The Definitive C++ Book Guide and List

C#

• See .NET below

Clojure

• Clojure Programming
• Clojure - Functional Programming for the JVM

CoffeeScript

• Smooth CoffeeScript
• The Little Book on CoffeeScript

ColdFusion

• CFML In 100 Minutes

DB2

• Getting started with DB2 Express-C (PDF)
• Getting started with IBM Data Studio for DB2 (PDF)
• Getting started with IBM DB2 development (PDF)

Delphi / Pascal

• Essential Pascal Version 1 and 2
• The Tomes of Delphi

Django

• Djangobook.com

Emacs

• GNU Emacs Manual, 16th Edition, v. 22
• An Introduction to Programming in Emacs Lisp, 3rd Edition

Erlang

• Learn You Some Erlang For Great Good

Flex

• Getting started with Adobe Flex (PDF)

F#

• The F# Survival Guide
• F Sharp Programming in Wikibooks
• Real World Functional Programming (MSDN Chapters)

Forth

• Starting Forth
• Thinking Forth

Git

• Pro Git
• The Git Community Book
• Git From The Bottom Up (PDF)

Go

• The Go Tutorial

Grails

• Getting Start with Grails

Haskell

• Learn You a Haskell
• Real World Haskell

HTML / CSS

• Dive Into HTML5
• HTML Dog Tutorials

Java

• Java Application Development on Linux by Carl Albing and Michael Schwarz(PDF)
• How to Think Like a Computer Scientist
• The Java EE6 Tutorial (PDF)
• Java Thin-Client Programming
• Sun's Java Tutorials
• Thinking in Java
• OSGi in Practice (PDF)
• Category wise tutorials - J2EE

JavaScript

• Crockford's JavaScript
• Eloquent JavaScript
• Essential Javascript & jQuery Design Patterns for Beginners
• JavaScript Essentials
• jQuery Fundamentals (starts with JavaScript basics)
• Mozilla Developer Network's JavaScript Guide

JavaScript (Node.js specific)

• Up and Running with Node
• The Node Beginner Book
• Mastering Node.js
• Mixu's Node Book

LaTeX

• The Not So Short Introduction to LaTeX

Linux

• Advanced Linux Programming
• GNU Autoconf, Automake and Libtool
• GTK+/Gnome Application Development
• The Linux Development Platform (PDF)
• Linux Device Drivers by Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman
• The Linux Kernel Module Programming Guide
• Secure Programming for Linux and Unix

Lisp

• Common Lisp the Language, 2nd Edition
• Common Lisp: A Gentle Introduction to Symbolic Computation - David S. Touretzky
• Common Lisp Quick Reference
• Let Over Lambda - 50 Years of Lisp
• Natural Language Processing in Lisp
• On Lisp
• Practical Common Lisp
• Successful Lisp: How to Understand and Use Common Lisp - David Lamkins
• Sketchy LISP - Nils Holm

Lua

• Programming In Lua (for version 5)

Mathematica

• Mathematica® programming: an advanced introduction by Leonid Shifrin

Maven

• Better Builds with Maven
• Maven by Example
• Maven: The Complete Reference
• Repository Management with Nexus
• Developing with Eclipse and Maven

Mercurial

• Mercurial: The Definitive Guide
• HGInit - Mercurial Tutorial by Joel Spolsky

Nemerle

• See .NET below

.NET (C# / VB / Nemerle / Visual Studio)

• C# Essentials
• C# Programming - Wikibook
• C# Yellow Book (intro to programming)
• Charles Petzold's .NET Book Zero
• Data Structures and Algorithms with Object-Oriented Design Patterns in C#
• Entity Framework
• Moving to Microsoft Visual Studio 2010
• Nemerle
• Programmer's Heaven C# School Book (covers C# 1.0 and 2.0)
• Threading in C#
• Visual Basic Essentials
• Visual Studio Tips and Tricks (VS 2003-2005 only)

NoSQL

• CouchDB: The Definitive Guide
• The Little MongoDB Book
• The Little Redis Book

Oberon

• Programming in Oberon (PDF)

Objective-C

• The Objective-C Programming Language
• Object-Oriented Programming with Objective-C

OCaml

• Introduction to Objective Caml (PDF)
• Objective Caml for Scientists
• Unix System Programming in OCaml

Oracle Server

• Oracle's Guides and Manuals

Oracle PL/SQL

• PL/SQL Language Reference
• PL/SQL Packages and Types Reference
• Steven Feuerstein's PL/SQL Obsession - Videos and Presentations

Parrot / Perl 6

• Using Perl 6 (work in progress)

Perl

• Beginning Perl
• Embedding Perl in HTML with Mason
• Essential Perl
• Extreme Perl
• Higher-Order Perl
• The Mason Book
• Modern Perl 5
• Perl & LWP
• Perl for the Web
• Perl Free Online EBooks (meta-list)
• Perl The Hard Way
• Practical mod_perl
• Web Client Programming with Perl

PHP

• PHP Essentials
• Practical PHP Programming (wiki containing O'Reilly's PHP In a Nutshell)
• Symfony2
• Zend Framework: Survive the Deep End

PowerShell

• Mastering PowerShell

Prolog

• Adventure in Prolog
• Applications of Prolog
• Building Expert Systems in Prolog
• Introduction to Prolog for Mathematicians
• Learn Prolog Now!
• Logic, Programming and Prolog (2ed)
• Natural Language Processing in Prolog
• Natural Language Processing Techniques in Prolog
• Prolog Programming A First Course
• Prolog Techniques
• Simply Logical
• Visual Prolog 7.2 for Tyros

PostgreSQL

• Practical PostgreSQL

Python

• Building Skills in Python Version 2.5
• Byte of Python
• Data Structures and Algorithms in Python
• Dive into Python
• Dive into Python 3
• The Django Book
• How to Think Like a Computer Scientist: Learning with Python
• Invent Your Own Computer Games With Python
• Learn Python The Hard Way
• Natural Language Processing with Python
• Python Bibliotheca
• Python for Fun
• Snake Wrangling For Kids
• Think Python (PDF)
• Thinking in Python

R

• The R Manuals
• The R Language
• R by example
• Computational Statistics, Jeremy Penzer

Ruby

• Learn Ruby the hard way
• MacRuby: The Definitive Guide
• Mr. Neighborly's Humble Little Ruby Book
• Programming Ruby
• Ruby Best Practices
• Why's (Poignant) Guide to Ruby (mirror)

Ruby on Rails

• Ruby on Rails Tutorial: Learn Rails By Example

Scala

• Exploring Lift (published earlier as "The Definitive Guide to Lift", PDF)
• Lift
• Pro Scala: Monadic Design Patterns for the Web
• Programming in Scala, First Edition
• Programming Scala
• Scala By Example (PDF)
• A Scala Tutorial for Java programmers (PDF)
• Xtrace

Scheme

• Concrete Abstractions: An Introduction to Computer Science Using Scheme
• The Scheme Programming Language Edition 3, Edition 4
• Simply Scheme: Introducing Computer Science

Sed

• Sed - An Introduction and Tutorial

Smalltalk

• Dynamic Web Development with Seaside
• Free Online Smalltalk Books (meta-list)
• Squeak By Example (Smalltalk IDE)

Subversion

• Subversion Version Control (PDF)
• Version Control with Subversion

SQL (implementation agnostic)

• Developing Time-Oriented Database Applications in SQL
• Use The Index, Luke!: A Guide To SQL Database Performance
• Learn SQL The Hard Way

Teradata

• Teradata Books

Vim

• A Byte of Vim
• Vim Recipes
• Vi Improved -- Vim by Steve Oualline

Websphere

• Getting started with WebSphere (PDF)

Windows Phone

• Programming Windows Phone 7

Fuente: Stack Overflow