If I were teaching GTD to a newbie I would have them download Thinkingrock. The first screen in the program is actually a modified GTD process flow chart. The progression is very logical (just follow the icons in the top bar from right to left). My favorite view is the folder tree view, very logical and easy to understand. (similar to the expandable folder tree structure in windows). They are coming out with an iPhone app in the next week or so however I own a Blackberry. The only way to view tasks and projects on the Berry is to create pdf reports which is better than nothing I guess. If they had a Blackberry app I would give it 5 stars.