What are the Basics I should Know About Networking?

[thisisBrawo]

ihave a zte modem plz tell me how i share my broadband with other pc there's a simply way to connect a hub and plug that's do ok but i dont want it i want that i gave a person an ip address then he access to net cuz and i dout that that person gave another one how do i do it.that can only person that i want to access a net plz plz plz tell me >>>