A Chinese friend recommended this book and the Chinese Cuisine companion. We have tried a number of the recipes and they come out tasting just like a good Dim Sum "snack" in San Francisco.
The recipes are especially well organized: the sets of ingredients are grouped and numbered, so it is easy to follow them. Good color pictures show exactly what you would see on a Dim Sum cart, so you don't have to know the name for sure. Every cookbook should be this well designed!
The text is in both English and Chinese.