I found a great site for an introduction to the new Flash Builder 4 that’s still in beta. It has finally convinced me that there is enough difference between Flexbuilder version 3 and Flash Builder 4 that it’s worth it to spend some time *now* with it than when it is coming out (whenever that will be).

The wiki site is called “Learn Flex 4 from Scratch” and is being written (so it’s not finished yet) by an Adobe community manager who is documenting his own strides in re-learning Flex.

If you want to follow it, you need to download Flash Builder 4 beta 2 – and you need an existing Flex Builder serial number if you want to use it more than the default 60 days.