Adobe's Acrobat creates Portable Document Format files. PDF is a versatile format that lets people share sophisticated documents on otherwise incompatible platforms. Acrobat is an expensive program, and converting PDF to Word in Adobe Reader costs money, but there are free websites that offer the service for free.
Open your browser and visit PDF Online (see link in Resources). At the left side of the page, click the "Choose File" button, browse to and click on the PDF file you want to convert, click "Open" and then click "Upload and Convert" on the site. Keep the page open until the process is complete. You can then right-click the aptly named "Right-click here" link and choose "Save Link As" to save a zipped version of the file to your computer.
Open your browser and visit ConvertPDFtoWord website (see link in Resources). Near the the top of the site, click the "PDF To Word Online Converter Enter Here" button. Click the "Choose File" button, browse to and click on the PDF file you want to convert and click "Open." Click the "Convert and Download" button. When the site finishes converting the file, click the "Download" button to download the converted document.
Go to the folder where your browser downloaded the file and double click it to extract or open the file, depending on which site you used.