it contains Excel concepts from basic to Advance levels.
Some Best Channel to learn Excel on YouTube are:
1. https://www.youtube.com/@LeilaGharani
2. https://www.youtube.com/@KevinStratvert
3. https://www.youtube.com/@chandoo_
4. Alex The Analyst: https://youtube.com/playlist?list=PLUaB-1hjhk8Hyd5NiPQ9CND82vNodlFF5