Point of view is something that you don't really understand, from a writer's perspective, until you've experimented with it a little. To do this you first need a story idea (or at least a single scene) and three different characters. Spend some time developing your characters before you continue with this exercise. Well-developed characters will enhance the exercise and better help you understand the nuances of point of view.
Once you have three characters and a scene for these three character to actually be in, it's time to write the scene. It doesn't have to be more than a page. Keep it short because you'll be rewriting it several times. Start by writing the scene from your point of view. This is a good thing to keep on hand as you move through the different points of view. It will act as your reference. Remember, the scene must be exactly the same each time. It is only the writing of it that will change.
Once you have your 'master scene', it's time to experiment with point of view. Rewrite the scene three separate times, each time using a different character as the point-of-view character. The same things will happen, but as you experience the scene through the lens of each individual character, you will notice subtle variations. Character #1 notices things that Character #2 takes no note of. Character #3 is so obsessed with how others perceive her that she barely notices anything at all. The thoughts and emotions of each character will have a clear impact on the overall narrative.
If your characters are fleshed out and alive (on the page, of course), each and every scene will be different. Oh, the sequence of events will be the same, but what each character focuses on, the things they care about, and their independent thoughts will greatly change the narrative. Play around with this a few times and you'll quickly see what I mean.