oh Gosh, although this is a great resource, I really hate Windows' commands. From my own personal experience, there are much better shells such as bash, csh and zsh. I heard fish was good too.
A lost art: "An A-Z Index of the Windows NT/XP command line". Everytime I open up a command screen and start typing commands people wonder what the heck I'm doing, it's really a lost art and knowing these commands can make your windows experience much more enjoyable....