Hello Sumit,
There is a reason why I wrote the "Getting Started" area in the wiki. It
should answer exactly what you asked for.
*Please read the wiki*
Short summary:
If you want to commit, commit. There is no need to wait. You can submit
patches via jira[1] create discussable forks
via github[2] and discuss new things via this mailing-list. You might be
asked as to become a commiter once you've
published something. But you do *not* need to wait for that to start.
yours
Martin.
[1] https://issues.apache.org/jira/browse/FLEX
[2] https://github.com/apache/flex
