If you log onto your local library website and do a search on the on-line catalogue for LinkedIn Learning, or Lynda.com, and follow the links to access the site, you can get free access to a site full of tutorials by professionals on many subjects: including photography. If your library does not have access go to the site: linkedin.com and you can sign up for a free month's free access.
The tutorials are conducted by skilled and experienced trainers. The closest tutorial I could find is for the Rebel T5i - but it is very similar in operation to the T7i, so it should be a good start. The course can be taken in small sections but the total time is about 1hr 12min.
There are many more tutorials on issues to do with other elements of photography, including a series called Photography Foundations hosted by an excellent trainer Ben Long.
On You Tube there is a tutorial from Tony Northrop on the T8i At this link - it is just over an hour long.
Canon offers free videos for all skill levels - Beginner > Advanced
Bay Area - CA
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