Overall, I think this is a good product. It was easy to work with and was thorough without engaging in too much detail. References to Wallace for further reading kept the work manageable for beginners, while at the same time allowing for more detailed study. The four star instead of five stars is almost entirely due to formatting issues. The Logos versions has a lot of tables in which the text in one cell bleeds into and overlaps with the text in the next cell. It is pretty sloppy and at times unreadable. Logos definitely needs to fix this. Also, it would be nice if the workbook allowed the user to type in answers for translation and parsing exercises. There is blank space allowed for it in the book, but no input options.