how do I edit a pdf file?

Hi kathleend10804174

I would recommend you to use Acrobat for editing pdf files. You can download a free 30 days trial version from this link- Download Acrobat products | Standard, Pro | XI, X

Here's how to get started with editing pdf files in acrobat : https://helpx.adobe.com/acrobat/topics/editing-pdfs.html

Please revert back if you have any other query or need any assistance.

Regards,

Rahul