Here is the updated list for March 2020 of all the tools which I recommend. Do let me know if you use any of the above tools.
- An Index Reduces Performance of SELECT Queries (Video)
- 3 Common Mistakes to Kill SQL Server Performance (Video)
- SQL Server Performance Tuning Made Easy – In-Person (Video)
- SQL Server Performance Tuning Made Easy – Online (Video)
- 3 Performance Tuning Tricks you Always Wanted to Know (Video)
- Secrets of SQL Server-Database Worst Practices (Video)
- Kick Start! SQL Server 2017/2019 Performance Tips and Trick (Video)