Pixel, the tutorial is very nice, but there are bazillions of ads around it. Even in the header, there are ads that are disguised as section of the site, ditto for the sidebar. By posting the link here, you invite people to see the ads, thus make money, and that is against the terms of service, hence the caustic remarks that you got.
I’m sure that you’ll get a way better feedback if you create a PDF with the tutorial (without the numerous ads) and post a link here.
Your post was also just consisting of a link and a title, no explanation as for the kind of feedback that you were searching for. Some members reacted as if you had just posted a link for a product… You know, if it smells like spam, people might say "spam" even if your intention was just to share your tutorial, and try to gather constructive critiscism.
