www.w3schools.com
1. Start with HTML.
2. Then go for server side scripting such as PHP; client side scripting such as Javascript.
3. Learn database interactive sites(dynamic pages) by using PHP and MySQL.
These 3 thinkgs should get you started. Learning 1 is easy. But 2 and 3 can take some time.
Then if you are interested further in case you aspire to be the "complete web designer package", you have action scripting(flash, silverlight), AJAX, etc. and you will have to have graphic skills too.