Nice review.
Nice advertisement rather. They asked Lazarus devels to promote the book, now they found somebody else.
I am the technical reviewer of the book. I used much time and energy to correct the numerous errors.
Then I expected to have a second round of review but there wasn't any.
As a salary, I was promised to get a copy of the book when it is published, but I got it only after asking a few times.
Some of the errors were fixed but not all, and it still concentrates partly on wrong things.
There were some links to internet which worked during my review. Now they don't exist any more.
Now my name is there as "Technical Reviewer" in a book with quite many errors. Not good.
Not really recommended by me.