Ubuntu 9.04 (Jaunty Jackalope) Guide
http://ubuntuguide.org/wiki/Ubuntu:Jaunty
The Perfect Desktop - Ubuntu 9.04 (Jaunty Jackalope)
http://www.howtoforge.com/the-perfect-desktop-ubuntu-9.04
GRAPHICS
The GIMP - free software replacement for Adobe Photoshop
F-Spot - full-featured personal photo management application for the GNOME desktop
Google Picasa - application for organizing and editing digital photos
INTERNET
Firefox
Opera
Flash Player 10
FileZilla - multithreaded FTP client
Thunderbird - email and news client
Evolution - combines e-mail, calendar, address book, and task list management functions
aMule - P2P file sharing application
Transmission BitTorrent Client - Bittorrent client
Azureus/Vuze - Java Bittorrent client
Pidgin - multi-platform instant messaging client
Skype
Google Earth
Xchat IRC - IRC client
OFFICE
OpenOffice Writer - replacement for Microsoft Word
OpenOffice Calc - replacement for Microsoft Excel
Adobe Reader
GnuCash - double-entry book-keeping personal finance system, similar to Quicken
Scribus - open source desktop publishing (DTP) application
SOUND AND VIDEO
Amarok - audio player
Audacity - free, open source, cross platform digital audio editor
Banshee - audio player, can encode/decode various formats and synchronize music with Apple iPods
MPlayer - media player (video/audio), supports WMA
Rhythmbox Music Player - audio player, similar to Apple's iTunes, with support for iPods
gtkPod - software similar to Apple's iTunes, supports iPod, iPod nano, iPod shuffle, iPod photo, and iPod mini
XMMS - audio player similar to Winamp
dvd::rip - full featured DVD copy program
Kino - free digital video editor
Sound Juicer CD Extractor - CD ripping tool, supports various audio codecs
VLC Media Player - media player (video/audio)
Helix Player - media player, similar to the Real Player
Totem - media player (video/audio)
Xine - media player, supports various formats; can play DVDs
Brasero - CD/DVD burning program
K3B - CD/DVD burning program
Multimedia Codecs
Here is the Official Ubuntu Wireless Documentation
Cards Supported
https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupported
Troubleshooting/Howto/General
https://help.ubuntu.com/community/WifiDocs/WiFiHowTo
In the event of your Wifi card being unsupported you can use Ndiswrapper Here is the Official Ubuntu Ndiswrapper Documentation
https://help.ubuntu.com/community/WifiDocs/Driver/Ndiswrapper
For Adding and Removing software use the Synaptic Package Manager
https://help.ubuntu.com/community/SynapticHowto
The Terminal
https://help.ubuntu.com/community/UsingTheTerminal
LUg.