There are 16 free training skills of how to use office suite for PDF

Insert comments in PDF files

How to add annotations to PDF files

How to add headers and footers to PDF files

How to add hyperlink to PDF

How to insert a watermark in a PDF file

How to extract and replace the page content of a PDF file

How to insert attachments in PDF files

How to print the notes in PDF

How to add a stamp in a PDF file