In order to use Newsinapp widget, you have to choose topics you want from newsinapp.io website. It's easy to setup, here is the detailed steps :
- Register to newsinapp.io (it's quick and free) : http://newsinapp.io/register/register/
- Choose topics you want to show from http://newsinapp.io/setup
- Get your "Public Key" and "Private Key" from http://newsinapp.io/setup/#settings
- Install Newsinapp Widget from the WordPress admin : Visit the Plugins - > Add Newpage and search for 'Newsinapp'. Click to install.
- Activate the plugin through the 'Plugins' menu in WordPress.
- Create the widget from the Widget Page.
- Write the Public and Private Key in the widget settings and save.
Video tutorial on how to use the widget: