Designing an app that retrieves news from the google news (or) news from the internet to my windows 8.1 mobile application. Help me with the articles or the ways to solve it up

i want to design a windows 8.1 mobile application which will retrieve data from the internet like google news ....

what are the steps i need to follow to do that application. help me in doing that application. please provide me with some articles so that i can understand better.

thank you in advance