When you're new to OS X, or in a larger sense UNIX, the OS X command line can be tough to learn. This file has provides several mappings to help you learn as you go. There are also a couple of settings to help you as well.
In this list of aliases for DOS/Windows users, the command in bold is what gets executed. the text on the left of the arrow is what a DOS/Windows user would normally type.
- cls => clear
- copy => cp -piv
- del => rm -iv
- deltree => rm -R
- dir => ls -l
- erase => rm -iv
- help => man
- md => mkdir
- move => mv -iv
- rd => rmdir
- rename => mv -iv
- rmdir => rm -R
- time => date
- tree => ls -R
- xcopy => cp -R