I think surfing the internet just means looking up stuff, or looking up something that takes a minute to get to it..not sure:)
Depends on the individual. Some people become seriously addicted, others do not, just like drugs.
In general, yes. Your ISP would be able to log every site you visit and to peek on all content you receive that is not encrypted.
Make a Poster and put it around your Neighbourhood or even around your Country. Make a Website.
you are just looking through the internet just to look through it.