The best way to remember these is to associate 1st person with "I", 2nd with "you" and 3rd with "he, she, or it". So a story along the lines of "I went to the store" is using 1st person narrative, etc. <span />
1st person is when it is from you. 2nd is when it is directed at people or someone, kind of like cookbook instructions, 3rd person is observing a person or thing.