What is Offline download?

Offline download means lessons are saved to your own device so you can work on them without a live internet connection. It matters most on a commute, on patchy hotel wifi, or anywhere a video buffering stalls you mid-topic. Providers describe it differently, so check whether the saving applies to video, reading or only to the app. 101 Blockchains, 2U GETSMARTER, Alison, Allied Schools and Alura all state offline download on their own sites.