Hey I've just recently purchased The Bakers Apprentice by Reinhart. I read the book twice, and I love it.
First thing I tried (in the middle) to make is the ciabatta.
Lacking AP Flour I used the Biga version.
I'm pretty sure I didn't mess up the Biga, I followed the instructions to the letter and the window pane passed very nicely when I put it in the fridge.