good advice from Porter I would say

I would also add that in my view Unix and Linux are virtually the same - there *are* differences but the std commands for listing dirs, viewing files, copying, moving, deleting etc are all the same.

If you are moving from windows try to get used to using the command line in Unix/Linux - it is where you will spend lots of your time and it also gives you the ability to do things if you do not have a graphical interface available.