A: Please see all Powerups here:

Powerups are additional set of features that will make your workflows better. Like granular permissions (tables, columns, views), appending CSV in existing table, deduplication, conditional color formatting, conditional forms etc.

https://www.youtube.com/playlist?list=PLgHggE5lv3GrLDXAbKI9cCckBpB33hk2V

All apps in the Apps Marketplace are here:

With Apps Marketplace, you can create real-time dashboards with Charts, Pivot Table, Page Designer, URL Preview, Map App, Time Tracker and more.

https://www.youtube.com/watch?v=HG0huaZgcBg&list=PLgHggE5lv3GpN4YczsNqqkzuazLF_IcdX