I will get a broadband line and want to make it a wi-fi hotspot, so that my dad, sister's and mom's laptop and my phones and tab get wi-fi connection. I want to restrict access to the network to the MAC address of the laptops plus phones and tabs we have in our house. So I want to know which type of network routers offer this type of restriction. Plus all the tips on how this can be achieved. Moreover, how will the network work? I am complete noob about Internet. How does the network routers work? Do I plug in the broadband into the router and turns the connection to a wi-fi signal? In that case do I have to buy a wi-fi adapter for the PC so that it receives the connection too?

Appreciate all and any help. Thanks.