Skype for Business Courses

Mastering Microsoft 365 (2022) (was Mastering Office 365)
Udemy

Migrating from Skype for Business to Teams
LinkedIn Learning

Upgrading to Microsoft Teams from Skype for Business
Pluralsight

Upgrade to Microsoft Teams
Microsoft via Microsoft Learn

Learning Skype for Business
LinkedIn Learning

Skype for Business Essential Training
LinkedIn Learning

How To Use MICROSOFT 365 For Business (Beginner to Advanced)
Skillshare

The ultimate real-life Office 365 productivity course
Udemy

Learn Skype for Business - How To Guide
Learnit Training via YouTube