By the way I noticed you are an IE user, you do realize there is no IE in Linux right?
Firefox is the standard browser in Ubuntu, you can install chrome and opera but not IE at least not directly especially 9 as it wont work.
IE8 works but dont expect miracles from it, remember this is another operating system here so dont expect it to work like windows in the slightest.
Program installation is different in it, there is honestly no flash or java preinstalled and you will have to install things like google chrome in order for them to work (flash support is dead on linux thanks to those morons at adobe, its only going to be maintained in chrome now and the one for firefox is going to be dead soon so if you never used chrome before better learn)
You can get plenty of tutorials online though plus I am willing to help in the learning curve.