If you are looking for a good free and regularly updated resource about Ubuntu, you might consider to subscribe to Full Circle Magazine. It's a free, independent, monthly magazine which talks about Ubuntu family of Linux operating systems. Full Circle Magazine has issued the latest edition #67 which talks about Python Programming Language, LibreOffice tips and tricks and also a book review.

The HOW TO section of this issue is focused on security, how to make your computer thief-proof.
  • Prevent the computer from booting on the secured system without a startup usb key.
  • Prevent the data from unwanted access
  • Prevent data loss
  • Use the created usb key as a toolbox by adding live distributions

In addition to those topics, there are many interesting topics you should read:
  • NEW! Ubuntu News.
  • How-To : Programming in Python, LibreOffice, and Create a Thief-proof PC.
  • Graphics : Kdenlive, and Inkscape.
  • Web Dev : CRUD Part 3.
  • Book Review – Think Like a Programmrer.
  • Review: OS4 OpenWorkStation.
  • Closing Windows – Installing Fonts.
  • What Is – PGP Encryption.
  • plus: Command & Conquer, Linux Labs, Ask The New Guy, My Story, and so much more!

Download Full Circle Magazine #67

Regards :)