A good way to get a first overview and some basic knowledge is to read an Ubuntu introductory book. Within this section you find assorted book recommendations for users with different kinds of backgrounds.
Ubuntu Unleashed 2019 Edition is filled with unique and advanced information for everyone who wants to make the most of the Ubuntu Linux operating system. This new edition has been thoroughly updated, including two new chapters, by a long-time Ubuntu community leader to reflect the exciting new Ubuntu 18.04 LTS release, with forthcoming online updates for 18.10, 19.04, and 19.10 when they are released.
The free Ubuntu operating system has won the hearts and minds of millions of users worldwide. It combines a strong technical platform, impressive quality, and an enthusiastic global community of users who relentlessly support, document, and test it.
Ubuntu 4U is based on the principles of collaboration and open source. It combines our personal knowledge and experience with the best freely available resources on the Internet. Consequently all the materials offered on this website are free for anyone who would like to use them. Many thanks to the authors of all the contents which we aggregated within this site to complement our contributions.