Branching Programs and Binary Decision Diagrams  
   By Ingo Wegener (SIAM, 2000). Errata, solutions to exercises, updates on open problems.
   http://ls2-www.cs.uni-dortmund.de/monographs/bdd/

A Compendium of NP Optimization Problems  
   By P. Crescenzi and V. Kann; KTH Stockholm. A continuously updated version of the appendix from the book "Complexity and Approximation" (Springer, 1999).
   http://www.nada.kth.se/~viggo/wwwcompendium/

Introduction to Circuit Complexity: A Uniform Approach  
   By Heribert Vollmer (Springer, 1999). Excerpts, errata, bibliography in BibTeX format.
   http://www-info4.informatik.uni-wuerzburg.de/CC/

Introduction to the Theory of Computation  
   Michael Sipser (PWS Publishing) Table of contents, errata.
   http://www-math.mit.edu/~sipser/book.html

Algorithms and Complexity  
   A downloadable textbook by Herbert S. Wilf. Each chapter is available as compressed PostScript or PDF.
   http://www.cis.upenn.edu/~wilf/AlgComp.html

The Art of Computer Programming (TAOCP)  
   By Donald E. Knuth. Bibliographic details of the published volumes (1-3, various editions and translations) and on-line beta versions of parts of volume 4, "Combinatorial Algorithms".
   http://www-cs-staff.Stanford.EDU/~knuth/taocp.html

Data Structures and Algorithms with Object-Oriented Design Patterns in C++  
   A web text by Bruno R. Preiss of the University of Waterloo.
   http://www.brpreiss.com/books/opus4/html/book.html

Handbook of Algorithms and Data Structures  
   By Gaston H. Gonnet and Ricardo Baeza-Yates. The preface, table of contents, index and all source code of this handbook. The main goal is to make available through Internet the source code of many algorithms (in C and/or Pascal) that have been already t
   http://www.dcc.uchile.cl/~rbaeza/handbook/hbook.html