PDF stands for Portable Document Format. PDF originally introduced by Macromedia Adobe. Microsoft Word's document is a good document for official documentation. But it has few limitations. For example if you created some documents in your own computer and sent these documents to some one else via email or using any other media but other computer doesn't have installed fonts which you used in your document. In this case Microsoft Word will load document with other fonts so your document's format will change and may be other user lose some lines. If you want to transfer your documents without any problem then first convert your documents into PDF (Portable Document Format) and then send these documents.

Converting your documents into PDF is not a tough job. There are few free PDF printers available on internet. You can install them. After installing PDF printer; a virtual printer will appear in your Windows printers. Open your any document (Word, Excel, Powerpoint etc.) and apply print command. Normaly pint command applied by Ctrl+P. You will see a combo box of Printers. Select PDF Printer from that list and click on OK button. PDF printer will ask new PDF file name. Type your new PDF file name and press OK button.

Congratulation! your new PDF document is ready.

I am using Adobe PDF printer for writing PDF files in my Windows.