Linux Devcenter has an excerpt from "Understanding the Linux Kernel" relating to how a x86-pc boots, from power is turned on until the kernel starts running.
An advocacy article promoting using the higher-level DBIx::Recordset instead of tailor-making "raw" DBI use at perl.com. I haven't used either (yet), and the advocacy is a little thick at times, but knowing that DBIx::Recordset exists is certainly nice.
From the "My gawd, what people do!"-department: LINE - executing unmodified GNU/Linux applications in Windows!