I just found this link yesterday on the new and improved Lycoming web site - it is a reprint of all sorts of articles from Lyc, in book form - download all the PDF's, and you'll have a lot of free and interesting reading to do while waiting for your copy of the Sac Sky Ranch manual to arrive....
Key Reprints is excellent as is the Skyranch book which I just received yesterday. Those, along with my powerplant textbooks from A&P school round out my engine reference collection.