My last advice on Flash: don't use it.
It had a great run, and it was one of the key tools of web design for many years. But those days have past, and now you have HTML5 instead.
... But Flash is better!
Yes, in some areas Flash makes it easier to do certain things when compared to HTML5 ... but in other areas HTML5 is better. But what is most important, HTML5 is ubiquitous and Flash is dying quickly.
Nerds need to let go sometimes, after all, Flash is not a beloved pet, it was just a tool.