If you are looking for some good resources to master your development skills, the following link has a exhaustive list of book recommendation, specifically on Programming, Design and Architecture.
http://www.codeproject.com/Reference/617/Useful-Reference-Books
This is the list prepared by Chris Maunder, who has co-founded CodeProject.com.
CodeProject.com is one of the best resource for technical information, specific to programming language, design and architecture. They cover brief as well as in-depth information on best known technologies. I had subscribed to their new letter which is one the best source for my daily tech needs.