If you haven't read it yet, follow this link to find the four page comic online (just click through the pages) and see what all the fuss is about. Which challenge will be easiest for you? Which more...well, challenging?
This summer I plan to read A Time to Dance by Padma Venkatraman. It's set in India, describes some Indian food, and includes some Hindi words, so it definitely meets the category for "a person who doesn't look or live like me," since I don't speak any Hindi and have only eaten Indian food a few times. That might change this summer. It also meets the category of "a topic I don't know much about," since the main character is a competitive-level dancer in Bharatanatyam. I'm not especially athletic. The back of the book tells me she's injured in a bus accident and has to have a leg amputated. Now we're really into a topic I know almost nothing about. I want to grow my understanding of what it's like to adjust to a major, life-changing accident. Finally, it also meets the third category of "a format I don't usually read," because it's a novel in verse, where each chapter is a new poem. I've read a few (Booked, by Alexander Kwame springs to mind) and enjoyed them, but not many.
I plan to read more than just one book this summer, and I plan to work at reading outside my comfort zone. I'll post my picks here. You can stay tuned for other teachers' plans to Read Without Walls as well. Start thinking about how YOU can meet this challenge!