Books to read about electrical matters and other stuff

A book that has got really good reviews is Nigel Calder´s work: Boatowner´s Mechanical and Electrical Manual

Boatowner's Mechanical and Electrical Manual: How to Maintain, Repair, and Improve Your Boat's Essential Systems

It is also mentioned in:
http://www.victronenergy.se/upload/documents/Book-SE-FristaendeElkraft.pdf