First, go out an shoot film. The more the better. Become one with the camera and its features.
1) Then you can learn about opening the lens if the scene is mostly light and closing down the lens if the scene is mostly dark - yes, it sound counter intuitive.
2) You could spend time learning various forms of the Zone System and then dedicate you life to endless testing.
3) You could avoid #2 by taking a light reading of what you want middle gray to be.
Or some form of the above.

I recommend that you just shoot film and enjoy the camera, keeping things simple. Later, as you come to various situations or learn more from this website, feel free to ask questions.

Remember, the only silly questions are the ones that do not get asked. We have all been where you are, so we will understand and help.