Dear New Member.
This is a subject that comes up regularly on this forum.
For living on a narrowboat/widebeam on the English canals, there are many things to take into account, not least the cost.
True, for the most part you will not pay full Council tax, but against that there will be higher fuel costs, both for moving and heating.
The purchase price of a boat can be attractive, compared to a small house, 2nd hand boats are similar to 2nd hand cars, too cheap and you are buying someone elses troubles. Like cars they go down in value the longer you keep them. Unlike house, that go up! (selling a house to buy a boat, may mean you will never be able to afford a house again.)
All canals and rivers are controlled by Navigation Authority's who have their rules and regulations to abide by. These you need to be aware of , for the area you wish to boat in.
Living on a boat, on a permanent mooring needs Planning Permission from the local council, so true residential moorings are both rare and expensive, especially in towns.
Living on a boat has to be a life-style choice, that all members of the household are happy with.
Everything that comes into a house, gas, water, electricity, post, all has to be taken to the boat or generated on-board, likewise all that leaves the house, rubbish, sewage, has to be carried away. In both cases by the boater. Not generally a problem in the summer, but very very different in the winter.
There are many more details that you as a "new to boating" person need to be aware of, but for now I'll stop.
Bod.
P.s.
This forum has a fantastic range of knowledge, that most members willingly share, if you are asked a question, it will be to clarify what they need to know, in order to give correct advice.
Also please come back regularly, some members are very quick to join a topic, less tham 5 minutes is not unknown.