Do u hv zoom class for learning the function of my iPad Air?

The best way to discover how to use your iPad is to refer to the iPad User Guide for iPadOS. This rich source of information, with both online and downloadable versions, is often overlooked:

Apple - Support - Manuals

Apple also has a huge YouTube Channel - containing videos and feature guidance:

https://www.youtube.com/user/Apple

Contact Zoom help center using this link:--> https://support.zoom.us/hc/en-us

Regards

Giulio