Bing Search enables you to search the web or maps through Microsoft's famous "decision engine". In the settings you can set the number of search results, the country on which Bing should search and if the search result should be opened in a new window if you tap on it. Enter a search term, scroll through the results and tap on it to open the founded result. Search the web either for web pages, for images or on Bing Maps. You can always look at the changelog (in the "Changelog" application menu) to see what has changed in the last updates.