To download a PDF, right-click the link on the card's page and choose "Save as...." to save to a specific folder on your computer. You will need a PDF Reader to open this file. Adobe Acrobat Reader can be downloaded here.
You can also open the PDF in a browser window by clicking on the link - from there you can print out without having to save it onto your computer.
If you prefer to use the jpg (or gif where applicable), you can right-click link for the image or rightclick on the image once you have opened it in a browser window.
Each Printer and Operating System has different default settings, so it's impossible to advise exactly how to print, but the following tips should help:
The greeting cards are set up for US letter size paper/card (8.5 by 11 inch), but most of them are not an exact fit and will require some cutting. They can easily be printed onto card of a different size, if you change the document set-up. On most systems there will be a shrink-to-fit option. For example, if I try to print a PDF on my Epson printer there is an option called Page Scaling in the dialogue box.
You should be able to reduce the size of the image relatively easily, however, if you wish to increase the size, the images will lose quality. I have designed some of the cards, using Illustrator and these will scale up if you're using the PDF.
You may want to do a draft print first to see how it looks.
To print out a high quality image you will need to change your printer settings to photo or best quality. You can usually find the settings under Preferences, Options or Settings in your print dialogue box.
You will need to cut the card out. I try to include cutting guides on the printout where possible.
If you wish to print out the inner text, if one is available (PDFs only), you will need to check which way your printer prints out and choose to only print one page at a time. If you don't want to print it out, then just tell the printer to print page 1.
The coloring pages are formatted for letter sized paper, but there should be no problem with printing on a different sized paper.