A. 1. Check if the app you are trying to print from supports sharing to the Paperang app. 2. If it does, use the share function to send the document or image to Paperang. 3. If it does not, consider saving the document as an image or PDF and then importing it into the Paperang app for printing.

B. 1. Use the 'Print' option in the app and select 'Save as PDF' or 'Export' to create a file. 2. Open the Paperang app and import the saved file for printing.