To save a Word file as a pdf, go to File>Save As.
From that box, select Format>PDF.
If the option to save as pdf is not available, your version of Word is out of date. But if you have the Adobe CS Suite, you can do it from there, in Acrobat Pro.
If you would like to get personal on-site software training in Adobe Photoshop, Illustrator or Dreamweaver in the greater Phoenix, Arizona area, please contact me. Yes, I will also do a training session on setting up your blog on Google Blogger! Paypal accepted, morning appointments only.