Traditionally, Old English grammars have merely presented grammatical information and teachers have been left to organize it and communicate it to students. Reading Old English, however, attempts to do quite a bit of the teaching, often warning students that one detail is particularly important to learn, or that they should not be discouraged upon encountering yet another seemingly illogical construction. The explanations are clear, and the exercises are well conceived and admirably plentiful. Furthermore, authors Robert Hasenfratz and Thomas Jambeck have been diligent in avoiding "dumbing-down" the material: students are expected to deal with most of the complexities demanded of them by more traditional grammars.
Very interesting and well-structured introduction to Old English! Also good that there is information on culture and literature and not just on the linguistics. Pretty approachable, even if you don't know a lot about linguistics! Only annoying thing were the typos which were quite frequent...
I believe I was in the first class to use this book, it was Fall Semester of 2005 with Hasenfratz.
We also used Mitchell and Robinson's Guide to Old English, the longtime standard, which I had tried using on my own a year or two earlier without much success.
I found the newer book very effective, as it incorporated practice and reading better than Mitchell and Robinson. (It didn't hurt to be in class, but it was graduate school and most of the work was done independently with the books.)
However, it is worth repeating as advice for the learner, that even the author of this book did not use it as the sole text when teaching.
Pretty good - some grammatical things wrong in the modern English parts, and some parts a little confusing in their explinations, but other than that really good.