Our textbooks are free
Matrices, Vectors, and Systems of Linear Equations. If you are looking for study material for electrical engineering or electrical and electronics engineering this is the right place for you. For each security task described, the author reviews the best open source tools and how to use them and also provides a case study and sample implementation.
A really nice book with a weird interface where you're required to type in a keyword search to access the chapters. Globusz Globusz is a unique ePublishing house, specializing in free eBook downloads. Net, Actionscript, Ajax, Apache and etc.
Science & Engineering books for free download - This ebook collection of computer science engineering includes from the first semester to the eight semesters of computer science engineering of all the universities.