I had to do it!
A free mini-guide that you can download with lots of examples illustrating how tu is used to ask yes-no questions in French.
Using tu to ask questions stumps a lot of learners, so I wrote this mini-guide to clear up your doubts.
Feel free to save it, email it to someone else, print it out and pin it on your walls or pass it along.
Here it is!
(PDF, 172 KB)