I have no idea how he finds the time, but he has just released Paperless which is the first in a series of MacSparky FieldNotes guides.
The book is available as an iBook Store download and deals with setting up and implementing a paperless workflow. It covers everything from scanning your documents to naming and filing through to backup and various power-user Mac tips.
In reality this is a showcase for what can be done with iBooks Author as much as it is a book as it includes video, screencasts and other rich media.
As the name suggests it is focussed on Mac users, but is also covers iOS devices in detail. A lot of the more general advice would also work just as well in a PC environment (although obviously you need an iOS device to get the book!).
If you have been thinking about going paperless then this is a great starting point... available for £2.99 on the iBook Store.