When you own a boat the Canal and River Trust send you a Boater's Handbook which gives you the owner, a comprehensive instruction and advice handbook.
This book is worth reading even though you think you know what you are doing. Sometimes we forget things that are important, and end up with egg on our face or worse.
This is a Boater's Handbook DVD video from the Canal and River Trust. It has plenty of information, and highlights a lot of good advice to anyone on the waterways. However it is aimed at the first time boater or hirer.