You can easily register for summer reading on Plum Library's website. You do not need a special card from Plum Library, but you do need a library card with the Allegheny County Library Association. You can check to find your closest ACLA library on their site.
Some memoirs recommended by your classmates were (check the Carnegie Library for availability. You can request to have the books delivered to the library of your choice.):
- The works of Frank McCourt: Angela's Ashes, 'Tis, and Teacher Man
- Carrie Fisher's Wishful Drinking and Shockaholic
- Tracy Elliott's Unbroken
Memoirs I have enjoyed even if they haven't changed my life include:
- Steve Rushin's Road Swing
- Anthony Youn's In Stitches
- Margaret Overton's Good in a Crisis
One caution I have heard about reading anything within the genre of your own writing is to take it all with a grain of salt. Use what you find as a guide, not gospel. Look for conventions. How long are the chapters? How does the narrative unfold? How do they give you caveats? Note what you like. One comment from a colleague of mine also made me take notice. Memoir and fiction are different. Memoir involves a certain bit of your own thoughts--essay if you will. Too much essay and we get bored or lost. Not enough essay and we wonder what the point was. Note which memoirs you really love and the balance of these two aspects. Remember it as you write and also as (or "if") you query publishers.