http://www.adobemagazine.com/
Adobe Magazine is the reincarnation of Proxy magazine, which was disbanded several months ago. Covering all aspects of design and the Adobe Suite of products, the magazine is centered towards the creative professional. Its downloadable .pdf pages are full of color, creativity, and interactivity that show off what the Creative Suite can do. The magazine is full of success stories, tips, tricks, and troubleshooting information provided by clients and customers. The document is full of information and best of all it is delivered to you as a free quarterly publication.
From the site: "We've reinvented Proxy magazine to create the all-new Adobe Magazine for Creative Professionals. Subscribe to this free, online quarterly, and discover fresh insight and tutorials from the wide world of visual communications. You'll see work that's breaking new ground, get an insider's perspective on how it was created, and find new ideas and tools to enhance your own projects."
Inside Adobe InDesign
http://www.amazon.com/Inside-Adobe-Indesign/dp/B00007AY6N
Although currently not on the web, this printed publication is full of useful information for any creative professional. The journal is bulging with a wealth of information about the latest InDesign news, tips, tricks, and each issue also highlights a specific example of the execution of a "best practice" for a specific job or client. Being one of the few print publications centered on InDesign, it is able to hold its own.
From the site: "Inside Adobe InDesign provides specific, real-world design examples in an easy to read, step-by-step format. This all-inclusive journal shows the best methods for each job and reviews the latest new tools and techniques."
InDesign Magazine
www.indesignmag.com
This site offers subscriptions to a bi-monthly .pdf publication of an InDesign periodical that offers you tips, tricks and various other inside info on the InDesign application. Aside from the paid service, you can sign up to receive the daily email InDesign tip, helping you to brush up on your InDesign skills daily.
From the site: "InDesign Magazine is the first bimonthly PDF periodical devoted entirely to Adobe InDesign and to the growing community of InDesign professionals. With editorial direction by page-layout guru and author David Blatner and creativepro.com editor in chief Terri Stone, InDesign Magazine brings you the in-depth features, reviews, and tutorials you need to master Adobe InDesign."