Depending on how complex the thing you're trying to make is, it might be faster to spend a day learning HTML than it is to spend a few days learning how to use a program to design something with HTML.
The best place for HTML tutorials I've found is
http://www.w3schools.com/html/default.asp .
Once you run through the tutorials and learn what all is possible with HTML (and have a vague idea of how to do it), they also have a great reference section on the bottom left you can use to look things up as you go.
One thing you might be interested in if you use firefox is a plugin called "firebug". It can help you debug a website that you're creating more easily.