I can give you some tutorials for the specific topics I mentionned, but please understand I can’t just explain the entire use of Blender and the whole movie pipeline in a comment.
Switch cameras in animation:
render to image sequence and re-assemble in editing software:
Animate lip movements to match a sound loaded in the sequencer (sadly, I struggled to find a good tutorial on this topic, maybe a more general facial animation tutorial would be better):
The best way to learn how to make a movie, in my opinion, is by making one. Knowledge is gained by going through the process, solving problems as they show up and learning from any mistake.
Pick a short story idea that will serve as a learning experience and try making it. Make sure to have a good idea of what you want the final result to be like. What elements will you need to have to complete that project? Models, effects, characters, voice recordings?
Take the process step by step, if you try thinking about everything at once, you will get overwhelmed. Do you have the objects and characters, or can you model them if needed? If yes, that step is completed and you can think of the next step without looking back (hopefully).
Do you then need to rig the characters? Learn how to do it if you don’t know. When you have something that’s functional, you can go to the next step.
Then, animate the characters/cameras/effects and just make the whole sequence of events of the movie in the 3D scene.
Once that is done, then you can think about lighting and rendering. Then you can think about assembling and editing the final video.
When you encounter a step you don’t know how to do, you can google it or ask for help for that one step (and you will get a more useful answer than asking about the whole process).
Could it go wrong and you fail to make the project happen? Yes, of course, that’s why your first movie should be a short and simple one that you aren’t too attached to. Then, you will get a better idea of what’s needed to make a movie and what you still need to learn. After that, you can go into a bigger project knowing you can make it happen.