you'll need at least version 11. I'm not sure that this is available free yet.
What do you want to do with it when finished? Do you want to return it as an edited .pdf file, or do you just need to send the edited text?
If it's the latter you could use the select text tool in your pdf reader, (most folk have Acrobat reader), to select the text, then past it into a word processor, edit it there, and then forward a word processed document.
You may get a OCR Optical Character Recognition Software With Your Scanner if you have one. As a PDF is like a Image or Photo,not text as you know it so it as to go through one of the above programs to change the Image PDF file to text so that you can Edit it This one click here
You can download this and get a 15 day free trial
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