Instruct: Classify a review as either positive or negative.
Query: Good book, poor proofing

As an experienced C programmer I found this a useful introduction to VHDL but was worried by a number of obvious typos and missing/mislabelled diagrams - if I can catch the easy ones (starting with the cover and chapter 1!) with no knowledge of the subject what are the important ones I didn't get? At the very least the publishers need to put up an errata site unless there is one I couldn't find.