@Photor @thomas If you're interested in the principles behind it more than the practical application, then these would also be good places to start:
- https://edolstra.github.io/pubs/nspfssd-lisa2004-final.pdf (the short version)
- https://edolstra.github.io/pubs/phd-thesis.pdf (the long version)

Especially the first one is a good read even if you just want to try and use it in practice, as it sets out the underlying design choices and rationales pretty well!