Remember that this tutorial was here just to get you started.  The next tutorial is there to actually teach you how to do this for yourself.

Hopefully you at least understood some of it though:

Those three technologies are what you need to know to make a Web page.  The job might be called Web Designer, Web Author or Front-end Web Developer.  This introductory tutorial does not tell you about PHP and MySQL which are two other Web technologies.  You will meet them soon but only when you are ready.  They are needed to become a true Web developer.