CGI Programming on the World Wide Web

this book written by By Shishir Gundavaram

although this book is out of print you still can read online at O really open book project,

table of content from this book is
Table of Contents
Preface
Chapter 1: The Common Gateway Interface (CGI)
Chapter 2: Input to the Common Gateway Interface
Chapter 3: Output from the Common Gateway Interface
Chapter 4: Forms and CGI
Chapter 5: Server Side Includes
Chapter 6: Hypermedia Documents
Chapter 7: Advanced Form Applications
Chapter 8: Multiple Form Interaction
Chapter 9: Gateways, Databases, and Search/Index Utilities
Chapter 10: Gateways to Internet Information Servers
Chapter 11: Advanced and Creative CGI Applications
Chapter 12: Debugging and Testing CGI Applications

Appendix A: Perl CGI Programming FAQ
Appendix B: Summary of Regular Expressions
Appendix C: CGI Modules for Perl 5
Appendix D: CGI Lite
Appendix E: Applications, Modules, Utilities, and Documentation

see more at http://www.oreilly.com/openbook/cgi/