This list of the top things to do immediately after installing your newly acquired copy of Ubuntu doubles as a general list of great software to try out and use, complete with links to any special instructions on how to set them up, Terminal commands for those who prefer a command-line interface (CLI), and when available, personal package archives (PPA), repositories to keep the applications at their newest version, not just the security updates provided for you by default. Feel free to pick and choose; enjoy!

Great "to do" list after installing Karmic. Even if you consider yourself a seasoned Ubuntu user check this out--there might be some apps in the list you weren't aware of!