I passed the first level with 95%.
Most of the questions were similar in difficulty level to the two tests in the study guide.
I only prepared with the study guide, went through it twice. Total days of my prep was for about 6 weeks, 2 hrs per day. I just took the 3 simulation tests found in Jeanne's site below
http://www.selikoff.net/2013/04/09/jeannes-togaf-foundation-cert-in-3-weeks-experiences/
to bolster my understanding
Thanks to the ranchers for sharing their experiences. I hope to take the level 2 sometime in June/July.