GCFGlobal - A long-existing, splendid resource to learn about many, many things, especially useful for novices of all ages. Below are links to some of their many tutorials
New Computer User:
[Jim's Introductory AI Course of 12/2025] - This is not from GCFGlobal, but might be interesting. It has multiple exercises.
LinkedIn Learning - I've found the video courses here to be consistently high quality, typically taking 2-10 hours to complete. They usually include sample files to work along. I've learned advanced techniques for many programs using them.
Many public libraries subscribe so it can be free.
Many YouTube videos are extremely help. Use a search to get good ones listed first.
Update: 12/14/2025