First you want to ask basic questions. You want the reader or the listener to get involved with the topic. If you ask a question, they will get involved and want to listen more to find the answer. The next thing you wan to do is question basic assumptions. You want people to agree with what you’re trying to explain. The very next thing you want to do is be aware of your mental process. What this means is being mindful of your thoughts and feelings as the happen from time to time. Its like waking up to somebody mowing their lawn or seeing the sunshine bright or smelling the delicious smell of bacon first thing in the morning or even tasting fresh brewed coffee. The next thing you want to do is try reversing things. For example, instead of worrying about the problem in a situation, worry about the solution.
Well, when its in first person you get more of an insight on how they really feel and think while when its in third person you have to rely on a guess and not a fact. So it limits the readers knowledge on the thoughts and feelings of the main character. Hope this helps :)