This is list of books that will help you become a better developer.

Code Complete: A Practical Handbook of Software Construction

Although this book doesn’t speak directly to web developers, it goes into depth on what is good practice for development in general. Some consider this to be bible for developers.  This is a must have if you want to take your development to the next level.

Design Patterns: Elements of Reusable Object-Oriented Software

This book is written by the “Gang of Four”. If you ever wondered where design patterns came from, this book started it all.  This is a must have for the quintessential design patterns reference guide.

Head First Design Patterns

For those developers who have a grip on object oriented programming (OOP) but have don’t really know what design patterns are. I like this book because it makes everything stupid easy to understand. Although to caters more to Java, anyone with sound OOP won’t have any troubles understanding it.

Don’t Make Me Think: A Common Sense Approach to
Web Usability

This book covers all the important topics of web usability. The author Steve Krug practices what he preaches by making this book extremely easy to read. Jammed packed with info, but direct and to the point, with a little humor mixed in. This is a must have for helping make your website more user friendly.

Head First Software Development

Web development isn’t all coding.  To be a good developer you should understand the process from front to back.  This book dives into the other side of development. Again this doesn’t specifically target web development, but it’s lessons can be used across the board. This is a must have to make any one that wants to round out their web development game.