HOW DO I MAKE VIDEOS

guys I wanna make long form teching videos but i have no clue how I should do that.... i have digital handwritten notes and I wanna use em but I have no clue how I should animate them so that I can use em as and when required uk..

please tell me if you know how i can do it.

https://youtu.be/ZT8NStjDUrI?si=J6mgRWD87I_zUDw5

some thing like this.... please help meee i dont know what to do. I can shift my software for my notes I dont mind.