The best place to start exploring Composable is the Search page. You can get to the search page by clicking on the
Explore All icon in the sidebar.
Once on the Search page, you will be presented with all the Composable resources (DataFlows, Folders, Groups, QueryViews, ...) that you have permision to "discover." A flexible faceted search panel is available on the left hand side, as well as some quick links to specific resources (e.g., "My DataFlows").