If you are writing in the first person, you really can't get away from using "I" but you can put these sentence starters in front of the "I" so that it doesn't jump out at the reader. As a matter of fact, I usually introduce sentence starters to my class when we are doing a personal essay. I have them notice how many times they start a sentence in the personal essay with "I" and then I have them circle all of those "I" sentences. Next, I have them scan the list of words and put one or more in front of the "I" sentences. Another trick is to take a sentence and invert it so that the "I" is not the first word. Here is an example:
Bad Example: I wanted to explain how to use sentence starters and so I used many "I" sentences in this answer.
Rewrite: Because I wanted to explain how sentence starters work, I used many "I sentences in this answer. Go back and see what I did to "eliminate" the "I"!