If you open the PDF in a modern Word (2013/2016/ browser version) it can be converted to editable text and then saved to one of many formats, including RTF and old doc (not docx), compatible with old Word versions… I don't understand why you need to use such an outdated text editor (there’s LibreOffice and Gdocs if you can't afford Microsoft stuff…) but anyway, I would use a new version to convert PDF and save into old doc or rtf.
The rest of the manual is fine, don’t let its technical explanations distract you and spend 10 minutes for the manual… and if you have a Mac, you'll find the PDF reader application easy to use — the PDF file format is natively supported. For that matter, the manual is a good reference and does not cover every point of use, you should read the tutorial section below for some specific details on how to use this app. To make this app even better, I have created this tutorial, it shows some examples of tasks using this app, the user’s manual is very thorough, and you should read it carefully to get some understanding of how this app works on specific topic. The purpose of this tutorial is to: demonstrate how to use the app, for all its features, you should probably read the tutorial (available at the bottom of the main.