I'm frequently asked to recommend resources. Some of the most helpful online resources are blogs.  I've included all the ones I subscribe to in my blogroll.  Other online resources I use include the Adobe Cookbooks, the Adobe Developer Connection and lynda.com.

I also like to have a good book or two within reach when I'm working.  I know that makes me old school but I like the tangible experience of highlighting text, jotting notes in the margins, "dog-earing" pages, and having multiple books open on my desk to compare explanations, sample code, etc.  And I can spill coffee on a book without doing any serious damage.

Here are the books I tend to reach for while building a database driven RIA.  Many of these books are also required or recommended reading for my classes.  This is by no means an exhaustive list or a list of the "best" books. Its simply a list of books you are likely to find me using while I work and teach.

• Flash Builder 4 and Flex 4 Bible by David Gassner
• Flex 4 Training from the Source Volume 1 by Michael Labriola, Jeff Tapper, and Matthew Boles
• Flex 4 Cookbook: Real-world recipes for developing Rich Internet Applications by Joshua Noble, Todd Anderson, Garth Braithwaite, Marco Casario, and Rich Tretola
• Enterprise Development with Flex by Yakov Fain, Victor Rasputnis, and Anatole Tartakovsky
• Adobe Flash Platform from Start to Finish: Working Collaboratively Using Adobe Creative Suite 5 by Aaron Pedersen, James Polanco, and Doug Winnie
• Head First Object-Oriented Analysis and Design by Brett D. McLaughlin
• Head First Software Development by Dan Pilone
• ActionScript 3.0 Bible Second Edition by Roger Braunstein
• Essential ActionScript 3.0 (Essential) by Colin Moock
• Head First Design Patterns by Elisabeth Freeman
• ActionScript 3.0 Design Patterns: Object Oriented Programming Techniques (Adobe Developer Library) by William Sanders
• Advanced ActionScript 3 with Design Patterns by Joey Lott
• Head First PHP & MySQL by Lynn Beighley
• Beginning Database Design (Wrox Beginning Guides) by Gavin Powell
• Learning MySQL by Seyed M.M. (Saied) Tahaghoghi
• Beginning PHP and MySQL 5: From Novice to Professional, Second Edition (Beginning from Novice to Professional) by W. Jason Gilmore
• Flash Catalyst CS5 Bible by Rob Huddleston