Use PDFfiller for my PDF editing and signing needs I use it quite often and it has made my life much easier. PDFfiller provides a lot of functionality for a low cost compared to other solutions. A few features were missing when I first started using it but they have added functionality and it's much better now.

Don't quite understand how it works as I am not a computer person except to do genealogy, and write. One cannot operate a computer without it. At least this is what I'm finding out. It all seems automatic, I would like to know more about it's function, Why's and what-fores, instead of just logging on and it appears. All I know is that it is a major function for downloading photographs and some documents. There should be a tutorial offered to those who are senior citizens and so many things are automatic. It takes understanding its function to a non-software-computer person. Guess more instruction would help.