They're quite small, 1-2 MBs ea. If you save the PDF files to disk (rather than viewing them in your browser), I recommend "saving file as" choosing a file name more descriptive than the obscure default names, which are just just series of numbers... so that you can better keep track of them.
Also consider copy/pasting this list to email to acquaintances, or post to other messageboards. "QUOTE" this message temporarily to copy all the proper BBS code to save work coding for other messageboards. Titles are linked to Amazon listings for more info on the books.