The Linux Documentation Project (TLDP) is an all-volunteer project that maintains a large collection of Linux (and Linux-related) documentation and publishes the collection online. It began as a way for Linux hackers to share their documentation with each other and with their users, and for users to share documentation with each other. Its documents tend to be oriented towards experienced users such as professional system administrators, but also contains tutorials for beginners.Here you will find excellent collection of books, tutorials, howto. All this documentation is compiled and maintained by many great knit team of volunteers who provide documentation for many aspects of Linux.
developerWorks is a website run by IBM for software developers. It contains a large number of how-to articles and tutorials, as well as software downloads and code samples, discussion forums, podcasts, blogs, wikis, and other resources for developers and technical professionals. Subjects range from open, industry-standard technologies like Java, Linux, SOA and web services, web development, Ajax, PHP, and XML to IBM’s products (WebSphere, Rational, Lotus, Tivoli and DB2).
is a monthly magazine published by Belltown Media, Inc. of Houston, Texas. The magazine has been published since March 1994.Linux Journal publishes articles on all levels of developing and using Linux and the software that runs on it, including everything from how to write device drivers to how to edit photos with GIMP.Most articles are fairly technical, however, Linux Journal does run some user-level and business articles in every issue, and sections called “Up Front” and “EOF” tend to be less technical. Linux Journal’s web site has the entire magazine archive available to subscribers along with articles from older issues and some online-only content available to all.
A very useful site where you will find everything to get familiar with Linux Shells. You can download the entire site also to view it offline.
Learn Linux is an Open Source project that aims to develop Free/Open Source GNU/Linux Training Materials. The project initiative is supported by The Shuttleworth Foundation under the direction of the Open Source Team.