Hii All

I am a layman, having zero knowledge about Routers. I live in a college campus, here to access the internet, we have to authenticate by giving username and password. Now I want to buy a TP LINK router to use it at my home, here the internet is provided through LAN. I want to provide this username and password at the router settings, permanently,  so that I don't have to do the authentication in each device like TV, mobile or laptop every time. Kind suggest which model of router has this facility, I live in India, speed of internet 1GBps. 

Since Iam a newbie, it will be helpful , if someone provide me the step by step procedure do to do this settings. I will be really thankful.

Thanks and regards

Avijit