I just wrote part 4 of my #Microsoft365 "Beginner's Guide Series"!
https://www.nickydewestelinck.be/2022/01/03/how-to-assign-a-license-to-your-microsoft-365-users-beginners-guide-series/
https://www.nickydewestelinck.be/2022/01/03/how-to-assign-a-license-to-your-microsoft-365-users-beginners-guide-series/