Microsoft's Office 365 is an extensive suite of products including email, team collaboration and productivity tools.

Microsoft has a wide variety of training tools available on their website at:

https://support.microsoft.com/en-us/office/microsoft-365-basics-video-training-396b8d9e-e118-42d0-8a0d-87d1f2f055fb

For training specific to individual applications (i.e. Outlook, Word, Teams), follow this link:

https://support.microsoft.com/en-us/office/office-quick-starts-25f909da-3e76-443d-94f4-6cdf7dedc51e

You can also access helpful tips and tricks from Microsoft here:

https://support.microsoft.com/en-us/tips/home