A User is someone or something that operates something.
There are over 3 Billion internet users worldwide and as of 2014 the country with the most internet users is china with over 642 Million internet users. The place where people use the internet the least is Oceania/Australia with 0.5% of the population who are users of the internet.
A computer program with a graphical user interface for displaying HTML files, used to navigate the World Wide Web
A Device is a piece of mechanical or electronic equipment used to access the internet.
ISP means:Internet Service Provider which is the company that provides your internet service.
A Webpage is a document that is connected to the internet.
The World wide web is an information system on the Internet which allows documents to be connected to other documents.
A Modem is a device that helps connect other devices to the internet.