Free C# Book: C# Development
The C# Book is used by the Department of Computer Science in the University of Hull as the basis of the First Year programming course. You can download this 185 page free ebook in pdf format.
Free eBook: Data Structures and Algorithms
This free book provides implementations of common and uncommon algorithms in pseudocode which is language independent and provides for easy porting to most imperative programming languages. It is not a de¯nitive book on the theory of data structures and algorithms.