Signal Boost drduh's Yubikey Guide
https://github.com/drduh/YubiKey-Guide
I recently set up my Yubikeys so that I could use the key to hold the private keys I use with git.
I spent a bunch of time reading through various guides discussing how to set up a master key with an offline backup, and how to put this on a GPG smartcard.
Drduh’s guide above is the best I’ve come across.
e.g. Most guides only mention the interactive way to generate keys. This guide at least mentions using a the batch interface.
(c.f. my key generation invocations).