I bought the electronic book last week, but I get an error message when I try to download the iBook. The PDF is pretty unwieldy. I wonder if the link is bad for the iBook. From what I've seen, the info is quite useful, but so far have not been able to access it well. I've tried contacting the seller, but no reply. I understand there's been a lot going on in this very sad time, just wonder if anybody has any assistance or helpful hints. Thanks.