PDF forms have fields that you can type into before you print.
Some fields such as signatures and dates are written in by hand later.
Click in the vicinity of the field and type in the the information. The TAB key will skip to the next field.
Press the Adobe print icon when done.
For best results, download the PDF and then open it for editing. Some browsers may display the form, but not be able to allow you to edit it as well as the basic Adobe Acrobat Reader software can.