This tutorial was written for Firefox 4 and Ubuntu 11.04, however pretty much everything contained here applies to older releases and will probably work in future versions too. This how-to covers pretty much everything needed to get you started with Firefox: installing Flash, customizing it, installing add-ons and themes, and useful tips for working faster with it.
Daniel Holbach maintains a daily builds PPA for a project called "Ubuntu Packaging Guide" which aims to provide a set of articles for working with debian packages and Launchpad, uploading your GPG key to Launchpad (required to create a PPA), fixing bugs, getting the code via BZR, working with a PPA and so on.
This is a guide on how to encode audio / video in which you will find some tips & tricks for using FFmpeg and other tools.
Changes are part of Nature so as with Technology.. Though this cannot be True for Windows and Mac cause the life cycle of a single Version is too much which is not the case with Linux.. Open Source evolve at very rapid rate and with evolution comes new & special changes … Today with a hike in Linux acceptance its pretty hard for competitors to provide similar solutions at free of cost. Open Source is known for User Interaction with Operating System which cannot be done with other OS