Then they should sent the pdf not give a link to it, for me it says "share it". I have given O'Reilly my email before, but the content is absolute crap. They a

Then they should sent the pdf not give a link to it, for me it says "share it". I have given O'Reilly my email before, but the content is absolute crap. They are spamming me even though I have cancel the subscription 3 times, hence direct link may bring them more marketing value than bunch of spam-only emails with fake names and phones numbers.