I am living in Tainan, and took the 50 cc scooter test recently. The first time I just guessing the answers, and almost passed, but not quite. The woman asked me where my book was and when I told her there wasnt one in English she dashed back to her office and grabbed one for me. Yippie. Very easy to pass the test after that. I just took the test about a month ago, so if you have any specific questions pls ask.
Also, here are some of the funnier bits from the drivers manual: