You can convert small groups of pages. Alessio Ganci
Using Apple's built-in "Automator" scripting application, you can make a simple drag-and-drop application to extract formatted text from any PDF file.
Also, you may try this tutorial about how to convert PDF files to Word format. Once they're converted, you can open the files Microsoft Word or a compatible word processor.
Hope it can do you a favor.
You need to convert PDF to Microsoft Word Doc file format to get required material. Follow this brief interesting tutorial with video guide of how to convert PDF to Doc.
After reading above tutorial you mite be understand how easy and cool to convert PDF to Doc. Don't forget to come back to share your views.