Need API/RSS for Wordpress template to turn into news aggregator

I have a theme I purchased and installed into Wordpress. I need someone to help me edit the theme (I did the dropdowns, but have not linked them to individual pages). Then I need someone to install an API or an RSS set of feeds to pull news from different sources and have it link up to the correct category on the site. We are an entertainment-based website. Once done, I need someone to show me how to create my own posts and make sure they end up in the right spot in the theme. The home page also needs to be edited so all of the columns have the proper names and such.