Videos with explanations

The use of the future tense with will and to be going to https://www.youtube.com/watch?v=0KcGo6xwHSk

The use of the future tense with will and shall https://www.youtube.com/watch?v=03LUR3_LmkI

Future with will and to be going to https://www.youtube.com/watch?v=qZijdNyZAJE