Finally started to learn Flash and got to the section where
coding begins. The tutorial (written by Todd Perkins, Lynda.com)
goes straight to ActionScript 3. But I wonder how much I will be
missing by not studying ActionScript 2 as well. I may get into
situations where I have to work on older files that use AS 2. I am
also worried that new files may not work on browsers that don't
have the latest Flash Player installed.
The feature is AS3, But some clients used to develop AS2
projects too. You should decide, how should be your career growth.
My suggestion would be AS3. BCZ its having all the Features of AS2
(With some limitation and More advantages)