A pet peeve of mine is when an article displays data to bolster an argument but then cites the source to something extraordinarily large and generic (e.g. "SOURCE: DEPARTMENT OF EDUCATION") which makes actually finding the primary data nearly impossible.
Check out The No-Nonsense Study Guides[1]. They are stripped down to just the essential knowledge for the exams. They won't help you master the material, but will give you more than enough information to pass the exams.
I used them with great success to pass all three tests on my first attempt.
"...snip... Calls to place an order for a commercial product may be made such as the proverbial call to the pizza restaurant to order food, but not calls to one's office to receive or to leave business messages since communications on behalf of ones employer are not permitted..."
http://www.arrl.org/phone-patch-guidelines
There's a piece of software out there called PokerTracker that allows a user to gather hand data for real-time statistical analysis. There are users out there who have very large databases (Billions of hands) and some users who will buy/sell/exchange these databases.
Was the English version of this talk recorded? I found the talk in Russian[1], but with my understanding of the Russian language, it's impossible to watch.
1. https://www.silicondust.com/product/hdhomerun-prime/