Two new Snow Leopard titles have been released today in both ebook and print format. The first, "Take Control of Upgrading to Snow Leopard" is author Joe Kissell's take on how to perform a flawless upgrade to Mac OS X 10.6. Kissell, a long-time contributor to TidBITS and Macworld, did many installations of Snow Leopard beta versions to create a process you can follow to insure a flawless upgrade. He describes how to make a bootable duplicate of your existing machine in case the upgrade doesn't work out as planned, and has tips and tricks for optimizing Snow Leopard or troubleshooting issues after the install. This 81-page ebook is available today for US$10 from Take Control Books, or you can order a printed copy for US$19.99.