And all of these books have great reviews. I believe that flash is the best platform for indie games. You can target the key main dream platforms (android, iphone, facebook, chrome web store) will the same code. And that is simply unbeatable.
So here is a list of books that I would like to go through to be an mid level expert in the matter of flash gaming :
This book is a beginners guide and has 4.6 stars as of this writing on amazon!
By the same fellow (rex spuy) that wrote the above title. Again amazing amazon reviews!
And at 400 pages not a heavy read :)