Linux continues to be a popular alternative to Windows, especially as a reliable and powerful server. ZDnet.com (6/29/01) reports that IBM will spend $1 billion promoting and developing Linux this year, including systems and software for small to medium-sized businesses. Linux's Open Source model gives developers the freedom to create, share, and tweak code, but this means that end-users are faced with installing, configuring and maintaining components from multiple sources, with little support or documentation. Issues like security, configuring hardware and even installation can be very tricky. "Linux Complete, 2nd Ed.", provides a comprehensive source of documentation from the best of Sybex's Linux authors.