I don't know how savvy you are with computers, but if you're running windows, you can install WAMP. It will get a local webserver running pretty quickly. Or you can use IIS built into windows, but it's more advanced to get up and working.

http://www.wampserver.com/en/download.php

Notepad++: http://notepad-plus.sourceforge.net/uk/download.php

Notepad++ has no GUI for design...it's all done by hand coding.