I really like the craftsy classes with Jenny Doan.
Watching Irena Bluhm on TheQuiltingSchool.com was what enabled me to finally "get it," after many hours of drawing feathers on scrap paper and dry erase boards. Once I saw it, the light bulb went on. "Ahhhhhh..... *that's* how it goes!"
If you're a visual learner, especially a beginner, this class on craftsy may be exactly what you need to take all the mystery out of this process. That's well worth $30, IMO. If you understand the concepts and the flow of tasks, then all you have to do is practice. :)