When Windows users try Ubuntu or make the switch, there are quite a few questions about the operating system. Many times people who have used Windows for years approach things with their ingrained mindsets and have a hard time understanding a new system. Once the concepts are grasped about how Ubuntu does things, the operating system becomes much easier, just remember that it is a new name for a similar task.
Where's my C: drive in Ubuntu?
Linux does not use drive letters like you are used to with the Windows operating system. When you have a CD rom, USB card, MP3 player, external drive, or a secondary hard drive, they are just objects that are mounted. If you go to Places then Home, it will open up your file manager. If you click on Computer, your "C: drive" is what's labeled "Filesystem".
What are these tar.gz and tar files?
Think of these like you would a zip file. They are just another way of compacting files into a smaller form like you would with zip files to allow for easier transfer of files either among users or different computers. On Windows you can use a program called 7-zip to open these. With Ubuntu these will open without any extra software needed to be opened.
Why will not Control Alt Delete work?
Ubuntu does not have the control alt delete key combination as a shortcut to anything like there is in Windows. If you want the same type of program to open up, there is a system monitor that is found under System and Administration. This will open up what you would know as your "Task Manager" so that you can close programs and see the system resources easily.
If you are looking for other key functions that the Ubuntu can do that are similar to the Windows operating system but with a different name, a quick Google search will provide many tips and sources of information from other Ubuntu users.
Many times the answer to the question is knowing where the same concept is but under a different name. Once someone who understands Windows knows the Ubuntu name for the same functions, the system is very easy to use since many of the functions are pretty much the same between the two operating systems.
Do not allow confusing technical terms keep you from trying out the free and easy to use Ubuntu operating system.