An official Apple Store should be able to direct your question appropriately if asked;
and if one is nearer to your location than any other, that's one to start with, in case
it happens to offer at least some informational courses for free as some do.
There may also be some Apple User Groups in your vicinity and some of them have
experts among their number who could be of help. In some regions, you can sign up
for official Apple courses where a certificate or other documentation may result, and
note those kinds of courses could have a fee. The apple locator link that CC provided
should be helpful in finding those locations where Training and Certification occurs...
Or:
https://aatcportal.apple.com/AATCWeb/locations
Other links include several for in-store retail level, how-to; a little more appears here:
http://training.apple.com/
http://training.apple.com/certification
Apple - Education - Professional Development:
https://www.apple.com/education/apd/
Good luck & happy computing! 🙂
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