Raphael Herzog's @debian Handbook — updated for Buster — is Debian's secret weapon https://raphaelhertzog.com/2020/07/24/the-debian-handbook-has-been-updated-for-debian-10/
The new Facebook design? Honestly, I don't hate it. It's a huge improvement.
I now have 4 Debian Stable systems: A 2017 HP laptop, a 2011 Mac desktop, and 2 Raspberry Pi Zero W boards
The last time I quit using Debian Stable — in 2013 — it was when my laptop died. I can see once again how nice it is to have the system working so consistently. I did this Debian Stable installation in late 2019.