I've read and written a lot of stories in my life, and one thing I noticed very early on is how different a story can feel when you shift a Point of View (PoV).

One of my earliest memories of reading a first person PoV was around 6 or 8 years old, when I was reading
Goosebumps.
Goosebumps books are famously written in first person PoV from the protagonist's (although sometimes they end up being the antagonist, but that's for another day) perspective. It's a very easy and effective way to place the reader in the middle of the story and elicit the feeling of fear that is desired when reading a scary story. This started me down a path of noticing how PoV can change the entire feeling of a story, and I began to experiment with it myself.
Point of View can be a very effective method of creating different emotions in a reader. It's also very useful to signify they type of story you're telling. There's many different types of PoV, and PoV switches, but I want to talk about some popular ones and how they effect the story.