Posts PDF and Downloads Page

Quite a while back (well over a year ago) I had a request from a reader to put my posts into a downloadable format.  I've finally gotten around to doing that; a PDF of almost all the posts published so far is now available on the new Downloads page (a link to the page is also available to the right).  I've re-ordered and grouped the posts in a way that I hope presents the information in a gradual, logical way.  Even so, it's difficult to translate blog posts to an offline format (obviously, they rely heavily on links).  I still hope some of you find it useful.  The sample projects referenced in many of the posts are also available for download on the same page.