Welcome to the Community, archana-epodium-.
You may utilize our QuickBooks Online test drive since offline demo classes is currently unavailable. This way, you can explore and experiment with features and options you might not feel comfortable trying in your own QuickBooks Online account.
You can check out these articles as your reference in creating bills and purchase orders:
Also, visit our QuickBooks Help Page to help you manage your business in your QuickBooks Online account.
Please don't hesitate to reach us back if you still need further assistance. I'll be here to help. Have a wonderful day!
