The first chapter is quite like a wry essay and the second slips into a memoir kind of tone. So if you want some life story stuff go to chapter two where you get more of a picture of who she is and where she comes from (if you've not read anything else she's written; which I had not).
But Mairs is a good writer and her anecdotes and non-chronological approach to matters of love, life, using a wheelchair and so on are really interesting and at times funny. I like how she shows up her own biases and ignorance before her disablement became apparent and then continues. Like she doesn't / didn't have all the answers and is constantly learning. It's very real in that respect.