I used this text in an independent study course, and found that while it taught me basic grammar principles, it was confusing as it didn't use the traditional names for these principles. For example, subjunctive forms were called "non-factual." It explained what a noun, verb, sentence, and independent clause were. This is most helpful for someone who has never learned a foreign language before, but for someone who has a solid grounding in grammar, this book is a bit too simple.