Is there any kind of "community recipe book" for CraftTweaker with examples to learn from?

Essentially, while exploring some of the advanced CraftTweaker features, I found it may be an ideal method of cheating my way past the chore of writing custom mods, but I'm having difficulty understanding how to apply certain features just from the documentation alone. I remember back with MineTweaker there were various repos/pages which had lots of example scripts for common tasks, and it was super helpful. Is there currently anything like that for CraftTweaker currently?

As far as the actual script I'm trying to write goes, essentially I'm trying to modify the drops returned when a player with a specific game stage unlocked harvests a specific block. I got as far as creating a handler for the event and checking for the game stage when I realized I have no idea how to compare the IBlock object returned by the event with the one I'm looking for. The docs say something about checking if one IBlockPattern contains another using the "in" keyword, but I have no idea what that looks like syntax-wise.

Thanks for your time, and any help you fine gents might be able to provide.