John,
Thanks for compiling the content here. I used your site to prepare for my second pass at the exam and it was immensely useful. I took the exam 6 days after my first attempt and passed. I feel the differentiator was the content organization. Sure Salesforce.com has Trailheads and there is tons of content online. But your site distills it down to the bare necessities for ADM201 but at the same time helped me firm up the core concepts. So it is not a short cut to get the cert. Rather prepare to meet the exam requirements in a expeditious manner. Great job!

I think you will see a lot of people line up for your advanced cert compilation.

Regards,
Rajeev