The Free Technology Academy is offering a complimentary copy of GNU/Linux Advanced Administration, a 500+page e-book that you can download in PDF format (19 MB). There is a registration page to fill out, but I didn’t think it was too bad; it only took a minute. They send a confirmation email that provides the link to the download.

The guide covers everything from an introduction to the operating system, basic tools, and the kernel to more advanced topics including:

  • Network administration
  • Server administration
  • Data administration
  • Security
  • Configuring and tuning
  • Clustering

It’s definitely worth a look. I came by it on Here’s the link to request your e-book download.