I had no idea, but since November, 2004, Adobe has offered a free “Interactive Magazine” (PDF), called Proxy. It’s full of tutorials, tips, troubleshooting advice, and design trends. It looks like it could be a pretty good resource.
Tip: The PDF files have interactivity. Apple’s Preview application can only utilize some of the interactivity. To get the full experience, you should open these PDFs in Adobe Reader / Acrobat.
Found via Creative Guy