Obviously, there are more detailed and comprehensive sources of this information, but I've found it gives enough for me to get a good idea of what a route, and the places en route, are like. Useful, I think.
Also by Archant comes The Canal Boat Buyer's Guide. Obviously, only of interest if you're buying a boat. Actually, possibly if you're selling, too!
And finally today, and again from Archant Maintaining Your Canal Boat. This one costs £2.99. The hard-copy version costs £6.95. The chapters are taken from past Canal Boat magazines, so subscribers to that may well have all of this publication lying around in some corner of the attic! I reckon £2.99's not a lot to pay for important instruction and advice like this.
More to come...