I had my first fail this weekend with regards to the challenge! This weekend I was attempting to make ciabatta and bought yeast since I was up in Rochester for the weekend. I left the loaf in the sun for a couple of hours to let it rise. I came back and reized the loaf had not changed shape or size.
So here's my tip of the week: check the date on your yeast BEFORE you start baking.
I'll be making a second attempt this weekend to NOT h e a fail.