ADDitude, an online magazine-style resource with the tagline "Inside the ADHD mind", offers many interesting and insightful articles and tips for those with ADD... including adults.

There are lots of free downloads offered, ranging from self-help to parenting tips for helping kids with ADD/ADHD and/or executive function issues. Other topics include deciding on a career and finding a job that is a good "fit."

ADDitude has been mentioned elsewhere on the forums...
Link to post: hat tip to Platypus101
Link to article: Uncomfortable Truths About the ADHD Nervous System