There are a few grammar reference books available for Japanese learners out there such as the Dictionary of Japanese Grammar series – books that contain an absolutely insane amount of information related to common grammar patterns and expressions. While not directly related, the Handbook of Japanese Grammar Patterns for Teachers and Learners is almost like a condensed version of those books. Numerous grammar points are listed in Japanese alphabetical order (or あいうえお order), and a section of each grammar point contains several example sentences demonstrating usages and so forth. It attempts to highlight common errors, and even includes small explanations when necessary. Looking at the construction 〜たい (want to…) for example, the book outlines three possible usages: R-たい, R-たいんですが, and R-たがる ('R' indicates the stem form of a verb in this text). Under each of these numbered sections, you will find several numbered example sentences. Following these is a brief comment on usage. If the comment mentions additional or related information, additional example sentences will be given after that.
As the title indicates, not only students of Japanese, but teachers can also really get a lot of use out of this book. In actuality, it is likely best used as just a reference manual. Additionally, students of any level can also sentence mine from it; there are certainly a lot of examples!