The shortcuts in Flash differ a bit from Photoshop and Premiere. And, if you’re making the jump back to an adobe product from say, Final Cut, you might need these.
Play: Enter key
Rewind: Control (Command for mac) key
Add new frame: F5
Delete new frame: Shift F5
Make new symbol: F8
To return to the “arrow key”: Press A
Control R: Import file
Control shift R: Export file
Control shift L: Show or hide timeline
Control shift W: Show or hide workspace
I think these are the necessary/important ones, if I come across other tricks I’ll let you know!