Parentwonder.com has compiled a detailed list of 36 free, downloadable e-books on a range of parenting topics. The list is a great resource for any parent and features links from a variety of sites around the web.
Broken out into a variety of subjects, the free PDFs fall into categories such as general parenting tips, teen parenting, breastfeeding, family finance, child education, single parents, food and nutrition and among others, being a dad!