Free Online Tech Books from Techotopia
Techotopia offers free online books that cover a number of subjects including programming languages, security, and Linux. The books are hosted on their wiki and are available to read online. The four main books that brought me to this site are:
As the website states that the "IT Essentials series of books are designed to provide detailed information that is accessible to both experienced and novice readers" (Techotopia). The books are clear and concise, providing detailed explanations and examples to help you understand the content. Each book is made up of multiple chapters in a logical and easy to follow order. You can access the table of contents from every page which makes it easy to skip around quickly and easily to look at what you find interesting and useful.
As well as the four books mentioned above, you can find books on these topics: