PDF files are everywhere. Sometimes you have to download them, print them, write in the blanks and then mail them off.
There's an easier way.
If you need to fill out a PDF form check out this site. http://www.fillanypdf.com
Upload your PDF file to the site. Click anywhere on the form to begin typing. You can even sign your form. There's also an option where you can share this link for others to fill out on this site and download.
When you are done, you can download the finished form print it or email it off.
There's no need to create an account and it's Free! Give it a try.