I am still struggling how to use QuickBooks. Is there any training online class I can attend? Thanks

Welcome to the Community, @shenesther-gmail.

Yes, we offer free webinars that demonstrate almost all sides of QuickBooks Online (QBO) and video tutorials you can watch for tips and tricks and step-by-step guides through the process of using QuickBooks. 

To view upcoming sessions, you can check out this link and reserve your place: Webinars.

Please know that you're welcome to post any questions you may have with QuickBooks here in the Community. I am always here ready to help you whenever you reach out. Have a great day!