Is there a Flex 4 Learning Path page, in much the same way as there was one for Flex 3? http://www.adobe.com/devnet/flex/learn/
The link above refers to the video lessons for Flex 3. In particular, it had links to good documentation on all sorts of topics, like good interface design practices and even actionscript 3 tutorials. It seemed like a very good structured plan for mastering Flex 3.
Thanks for bringing this up and providing your feedback.
We got a lot of feedback from developers in the timeframe leading up to Flex 4 that they needed a quicker ramp-up to getting their first app up and running. In response to that, we focused our resources on the new Test Drive (http://www.adobe.com/devnet/flex/testdrive/) as opposed to the Learning Path format.
Again, we are always interested in your thoughts on the best way to get to our resources, so please keep your feedback coming.