Why not? CW - is telegraph, or morse code. Many people think that this language is dead, but it is still widely used among HAM radio operators. There are plenty of different codes used for communications between computers but morse code is probably the only one left out of those that possible to read and write by human being, without computer aid. And this code is possible to hear around the earth if there is huge interferance on radio waves. It is fun to learn, and it is useful if you want to join HAM radio hobby. There are plenty of programs and books for studying morse code, but not many people know that there is a whole website that is commited to help you learn morse code (CW)and the site called lcwo.net The studies of code here are devided by lessons, transfer from one lesson to another is automatic. There are different groups of lessons, and there are speed presets available. You can also generate and download mp3 files of any lesson and listen it while you are away from computer and internet.Registration on this site is free, so, if you are interested, go and register there.