Microsoft Visio Open Source/Free Alternative

If you don't have MS Visio like me don't worry, here is the list of alternative open source or free that you can download it legally and use it.

http://dia-installer.de/index.html.en
http://www.ariscommunity.com/categories/aris-express
http://www.edrawsoft.com/download.php
http://meesoft.logicnet.dk/DiagramDesigner/
http://www.nevron.com/Products.DiagramDesigner.Overview.aspx
http://www.gliffy.com/

From the website looks, i like to try gliffy as it is online so i don't have to install anything on my laptop.

Ubuntu Pocket Guide Available as a Free Download

The ultimate Ubuntu book!

Ubuntu Pocket Guide and Reference is now available! Written by award-winning author Keir Thomas, Ubuntu Pocket Guide and Reference is a totally unique and concise guide for everyday Ubuntu use.

• Focuses on core competencies and background knowledge needed to be an expert Ubuntu user;
• Readable, accessible, and easy to understand—even if you've never used Linux before;
• 100% new and original! Written from the ground-up to cover Ubuntu 8.04 and 8.10.

"A great resource covering Ubuntu
from A to Z without all the extra fluff"
Ryan Troy, administrator, Ubuntuforums.org

How to get it

Ubuntu Pocket Guide and Reference is available in print and PDF editions.

• The Print Edition is available for a recession-busting $9.94 from Amazon.com. Add it to your Amazon order now!
• The PDF Edition is entirely free of charge and is identical to the print edition. Grab the PDF or click here to tell a friend!

New to Ubuntu?

Here's how to get started with the world's favorite Linux:

1. Download Ubuntu.
2. Download the PDF Edition of Ubuntu Pocket Guide and Reference—it doesn't cost a penny, and the first chapter tells you how to install Ubuntu!
3. Become an Ubuntu master in double-quick time by reading the rest of the book! Ubuntu Pocket Guide and Reference is totally succinct. No fat!
4. Buy the print edition of Ubuntu Pocket Guide and Reference (it's only $9.94!) and keep it by your computer—a lifelong companion for your Ubuntu journey! Buy a copy for a friend to give them the best possible start to their Ubuntu journey

Source: http://www.ubuntupocketguide.com/