Help on what application I need

Hello Adobers,

I reached out to this community (which I didn't know existed) because I need some help from experienced adobe users as to what application do I need to start my project.

I want to create online courses about science. The final product would be a video that would present the lesson, a physics exercise f.e. I want to create moving objects, falling, accelerating, colliding e.t.c. At some parts of the video  I will write down the equation and the problem solution using digitizer, and maybe i will record my self talking in a corner. In my future plans is to create animated characters that will talk or showing stuff. e.t.c. I have experience with Photoshop but no other adobe product. Which one would you recommend to invest my time and resources?