If ever there were two words I love to hear together, it's "free" and "books." Right now if you go to eHarlequin.com, you can get up to 16 books from many of their popular lines totally FREE. The books are available in PDF, as well as three other popular ebook formats.
Personally, I downloaded both the PDF and the .lit files and then I converted the .lit files to Kindle format so I can read them on my Kindle. But all you really need is Adobe reader, or the fancier Adobe Digital Editions reader, either of which you can get on Adobe's web site.
A word of caution - some of these books are for adults only. But Harlequin also produces the popular Love Inspired series, which are nice wholesome romances. Just so you know.
So what are you waiting for? Go get your free books!