click the link for the PDF.
it should open up, as a document you can read.
along the top somewhere there will be a "file" tab - click, and locate "save as".
this shoud open a dialogue box, with options ot save and where etc on your computer.
file as you would for any documnet - check you know where it is going so you can locate it to attach to email.
save.
then open up your email porgramme and attach it and send to free kindle address.