How to edit a pdf own Photo calendar files. Or how to create a own photo calendar.

You will have to purchace a program that can edit and save files as a PDF document. There are several different ones these days, some are actually affordible. Adobe Acrobat is the original and the most expensive of them.

Adobe reader can not do this...

And this assumes the original document isn't write protected which would prevent it being edited. THere are ways to remove they read only flag, but the are difficult to do... and even harder to explain.

Can I get any free software