By Tapping one of the topics, you navigate to its Topic Page. 

By Tapping the top banner with a featured topic or collection, you go to its Topic Page or collection page.

By Tapping on "See all" for the curated categories (e.g. New and updated), you go to the collection list view.

By Tapping to the left for the curated categories (e.g. New and updated), you can see more topics in that category