Hello ever students,
I think you'd better learn flash first. There are many video tutorials introduct the operations step-by-step. You can learn it first. Because it's very hard to talk all of the steps here.
Another way, I think you can make the flash on powerpoint, and then use some third-party tool to convert the ppt file to flash file. I remember I have read an amazing article about how to make flash on PowerPoint step-by-step, you can go to http://www.articulate.com/rapid-elearning/how-walt-disney-would-use-powerpoint-to-create-e-learning-courses/ and have a look.
Hope it helps!
Sincerely,
Sabrina