This doesn't just mean 'where do you put it', but also 'what do you do with it once you've put it there'. Most student filmmakers, for some unexplainable reason, go for the Dutch tilt at least once in their masterpieces. Anyway, the obvious point is that you have to know why you are using camera angles. The acknowledged master on this subject is Hitchcock.
Every camera angle has a reason - adds to the scene.
A high angle shot generally makes people look small, and distances the audience. A low angle shot generally has the opposite effect. Work out what you want each scene to DO to your audience, and set about doing it with the camera. The only way to learn is through practice - and that, unfortunately, involves use of the Dutch tilt. The only thing that matters is that you understand WHY you are using them.