First person point-of-view(POV) can be one of the most difficult perspectives to write from. Some of the positives of first person are that you really get to know the character well. You get their thoughts, opinions, perceptions and the reader becomes attached to the main character.
However, this means you character must be AWESOME! This story is only 30% plot. 70% of your story needs to be driven by the character. If you have a dumb, whiny or uninteresting character then the reader will close the book no matter how exciting your plot may be. I have enough whiny characters in my real life, I read to escape. First person POV also means you don’t know what other people are thinking or feeling. You can read facial expressions, interpret actions, ask the other characters or have the other characters offer that information but that’s it. No brain jumping. Which means as an author you must know everything about your world but what goes down on the page must be put through the filter of your main character. They won’t know everything.
Along with not knowing everything that others think you also don’t know anything that happens away from you. If George isn’t in the room when something happens but needs to know, then you as an author have to figure out how he learns about it. I can see this working well for mysteries as this allows the author to hide things from the reader because the main character doesn’t know them. The reader doesn’t feel cheated by this because they understand the main character couldn’t have known.
Be wary of info dumping. This is good advice any time but first person POV makes it very tempting. Keep your character interesting but try to avoid arrogance and whiny. There are a lot of “rules” for first person POV and they can be broken with only one stipulation: Make it AWESOME!! *this comes straight from Larry Correia*
This is the Novel Mage saying, *POOF*