Update manifest file with proper license key as described above in root README file.
HERE Mobile SDK provides wide variety of geolocated AutoSuggestion search service. This sample app intended to gives you a basic introduction how to use it.
You can find more details about this feature and capabilities in Search and Discovery API.
Application provides a set of predefined AutoSuggestion requests which will be a great place to start. Use code as an entry point and documentation to understanding all possibilities you get.