What do you want to know?
How to use it? Try: https://padawanwallet.com/
To actually use it?
https://blixtwallet.github.io/
Philosophical implications? It will be a long discussion between us.
Discussion
Thank you! this is for my father, who is much more inclined to read books than read articles online or listen to podcasts.
Philosophical implications are probably the doorway in.