Video guides
The Auto-Batch mode can be used to create a multi-paged PDF file. A detailed video is available here.
For a quick video guide on how to reorganize a PDF's pages tap here.
How to change your directory for saving files is shown here.
Tap here to see how users can enable Night Mode while reading / viewing a PDF.
PDF Extra's integrated file browser allow for quick and easy file editing and management. How to rename a file using PDF Extra check the video here.