For now, perhaps the best materials available are included in Chapter 13 of David's book, "Getting Things Done."
In our two-day seminar, we spend time talking more specifically about individual project planning, and some of the "best ways to think" about projects. We usually don't present that information in our one-day seminars.
Personally, I knew for a long time that I could more or less effectively think about something. As a matter of fact, many years ago I was one of the only ones taking class notes in multiple colors. I found over time that one of the ways I learn the best is through visual variety.
Likewise, making goals attainable, attractive and fun in the process has taken work and focus. I've tried a few things, including making collages, writing affirmations and creative visualization (all topics included in our Leveraging Focus and Vision seminar).
Finding what will work for you will ultimately be a process of trial and error. Try something; if it works...keep on doing it!