I want to be able to edit a pdf that I have and its asking for a permission password.....where do I get his permission password from. Secondly does the signing feature apart of acrobat reader pro - or is that a monthly fee add on

1. There is no product called Acrobat Reader Pro. There is Acrobat Reader, which is free. There is Acrobat Pro, which is paid for.

2. The permission password is set by the person or software that creates a PDF, or by someone else later. You need to ask for the password, as they have blocked you from editing, probably deliberately. Acrobat Pro can remove security if the password is known, Acrobat Reader cannot do this.

3. Acrobat Pro can sign. Acrobat Reader can subscribe to a signing service. Acrobat Pro SUBSCRIBERS also get this signing service (a second option), Acrobat PURCHASERS do not.