What are some general effects a first-persons point of view creates in a story

You get to see the character's perspective of certain things. You get to hear their thoughts and their thought process while also knowing how they may feel. 

is basically a good source of getting and others by what you know for example if someone asked a question and you know the answer you could answer it and get some points or if you need on a question you could make a post about it and wait till someone answers it or just look up the question and see if someone else has asked about it