Hi!
I created a series of my own blog articles on how I am using
features from Org mode.
It's not related to the manual, it's related to "how to combine misc
features for everyday's work".
Maybe you find a few tricks here or there:
https://karl-voit.at/2019/09/25/using-orgmode/
PS: Sorry for the advertisement in case you're feeling upset. I'm not earning
any money with my web page though!