The author says he has always been an enthusiastic bookstore browser, and having Amazon.com and Half.com just one click away has proven to be more temptation than he can resist. Although based in sound science and bottom-line business results, the book 'Guide to E-Learning,' by Michael Alien strikes me as being more about the art of e-learning than the science. Because e-learning evolves incrementally and not always in book-size leaps, my nightstand also accumulates Internet-based articles printed for more convenient reading.