does apple stores give free classes on ipads?

Yes.

The Apple Stores in most countries have web pages which list their workshop schedules. If you're in the US, select your local Apple Store here:

http://www.apple.com/retail/storelist/

and you should see a list of workshops and dates and can make a reservation. For other countries similarly look at the Retail section of the web site and choose your local store as appropriate.

Regards.

I believe so, yes. Another good source of info is "iPad User Guide for IOS 7.1" available free at the iBooks Store. Also there are YouTube videos, Podcasts, and info on the web.

You're welcome. Glad to help.