El sitio web de  IBM developerWorks es excelente para aprender Linux, tienen muy buenos artículos y manuales, os dejo un listado con 88 tutoriales de dicho sitio web, seguro que alguno de ellos os resulta útil:

- Industrial-strength Linux lockdown, Part 1: Removing the shell
- Deploy Red Hat across multiple computers using Tivoli Provisioning Manager for OS Deployment
- UNIX tips and tricks for a new user, Part 4: Some nifty shell tricks
- LPI exam 102 prep, Topic 109: Shells, scripting, programming, and compiling
- UNIX tips and tricks for a new user, Part 3: Introducing filters and regular expressions
- vi intro — the cheat sheet method
- LPI exam 102 prep, Topic 108: Linux documentation
- LPI exam 102 prep, Topic 107: Printing
- Using open source software to design, develop, and deploy a collaborative Web site, Part 4: Building your development environment in Linux
- Porting to the Linux Standard Base
- LPI exam 202 prep, Topic 214: Network troubleshooting
- LPI exam 202 prep, Topic 212: System security
- LPI exam 202 prep, Topic 210: Network client management
- LPI exam 202 prep, Topic 208: Web services
- LPI exam 102 prep, Topic 106: Boot, initialization, shutdown, and runlevels
- LPI exam 102 prep, Topic 105: Kernel
- LPI exam 101 prep, Topic 110: The X Window System
- LPI exam 101 prep, Topic 104: Devices, Linux filesystems, and the Filesystem Hierarchy Standard
- LPI exam 202 prep, Topic 207: Domain Name System (DNS)
- LPI exam 202 prep, Topic 206: Mail and news
- LPI exam 101 prep, Topic 103: GNU and UNIX commands
- LPI exam 202 prep, Topic 205: Networking configuration
- LPI exam 101 prep, Topic 102: Linux installation and package management
- LPI exam 201 prep, Topic 211: System maintenance
- LPI exam 201 prep, Topic 213: System customization and automation
- LPI exam 201 prep, Topic 214: Troubleshooting
- LPI exam 201 prep, Topic 209: File and service sharing
- LPI exam 201 prep, Topic 204: Hardware
- LPI exam 201 prep, Topic 203: Filesystem
- LPI exam 201 prep, Topic 202: System startup
- LPI exam 201 prep, Topic 201: Linux kernel
- LPI exam 101 prep, Topic 101: Hardware and architecture
- Sockets programming in Ruby
- Sockets programming in Python
- Hacking the Linux 2.6 kernel, Part 2: Making your first hack
- Hacking the Linux 2.6 kernel, Part 1: Getting ready
- Learning PHP, Part 3: Authentication, objects, exceptions, and streaming
- Linux virtualization on POWER5: A hands-on setup guide
- Manage C data using the GLib collections
- Learning PHP, Part 2: Upload files and use XML to store and display file information
- Learning PHP, Part 1: Register for an account, upload files for approval, and view and download approved files
- Test-first Ruby programming
- Embed Python scripting in C applications
- Build a GCC-based cross compiler for Linux
- Embed Perl scripting in C applications
- Linux-powered networking, Part 3: Integrate Linux and Windows with Samba
- Linux-powered networking, Part 2: Set up a DHCP server to manage IP addresses
- Linux-powered networking, Part 1: Build a DNS server with ISC BIND
- Network packet capturing for Linux
- Using the GNU text utilities
- Programming Linux sockets, Part 2
- Build a grid app with Python, Part 5: Tracking and management
- Build a grid app with Python, Part 4: Metadata
- Build a grid app with Python, Part 3: Security
- Build a grid app with Python, Part 2: Communication
- Build a grid app with Python, Part 1: Introduction
- Programming Linux sockets, Part 1
- Build grid applications with the Python Extensions for the Grid (PEG)
- Build Python grid applications with the Globus Toolkit
- Installing Tivoli Access Manager on Linux
- Making of MetroSphere, Part 16: Secure version management with CVS
- Build a Linux test network
- Introduction to User-Mode Linux
- Build an LDAP-based address book
- Linux links wirelessly
- Tuning Red Hat for maximum performance
- Living in Emacs
- Creating KParts components, Part 2
- Creating KParts components, Part 1
- Linux clustering with MOSIX
- Introduction to XFree86 4.x
- Configuring TCP/IP under Linux
- Tcl/TK quick start
- Beginning Haskell
- Backing up your Linux machines
- Fast Web browsing with a caching proxy
- Installing FreeBSD
- Creating dynamic Web sites with PHP and MySQL
- Bridging XPCOM/Bonobo: Techniques
- Building KDE themes for Linux
- Inside the Apache directory structure
- CVS for the developer or amateur
- Using Perl to access DB2 for Linux
- Getting to know GRUB
- JFS fundamentals
- Rebol scripting basics
- Using regular expressions
- Compiling and installing software from sources

Fuente.

Aquí tenéis unos manuales que he encontrado para novatos referentes al editor de textos Vim:

Vimdoc: html + pdf
Eandem: pdf
Hawaii College of Engineering: html +pdf

Definición de Vim por parte de la Wikipedia:

Vim (del inglés Vi IMproved) es una versión mejorada del editor de texto vi, presente en todos los sistemas UNIX. Su autor, Bram Moolenaar, presentó la primera versión en 1991, fecha desde la que ha experimentado muchas mejoras. La principal característica tanto de Vim como de Vi consiste en que disponen de diferentes modos entre los que se alterna para realizar ciertas operaciones, lo que les diferencia de la mayoría de editores comunes, que tienen un sólo modo en el que se introducen los comandos mediante combinaciones de teclas o interfaces gráficas.

En Linux Haxor han publicado una lista con 68 e-books gratuitos relacionados con temática Linux, BSD, Php, Gnu… Ahí van unos cuantos, para la lista completa acceder a la fuente original.

1. Advanced Linux Programming by CodeSourcery LLC
2. Comprehensive Linux Textbook by Muayyad Saleh Al-Sadi
3. Java Application Development on Linux by Carl Albing and Michael Schwarz (PDF)
4. Linux Client Migration Cookbook, Version 2: A Practical Planning and Implementation Guide for Migrating to Desktop Linux by Chris Almond
5. Linux Compute Clusters by Chander Kant
6. The Linux Cookbook: Tips and Techniques for Everyday Use by Michael Stutz
7. Linux Device Drivers by Alessandro Rubini and Jonathan Corbet
8. Linux Installation and Getting Started by Matt Welsh
9. Linux Kernel Module Programming Guide by Ori Pomerantz
10. Linux Network Administrator’s Guide by Olaf Kirch and Terry Dawson