[racket] New web pages!

Maybe change "Draw more pictures" to "Begin by drawing pictures"?

(I suspect many people will jump quickly to that paragraph, and "Draw 
more pictures" is not only a little confusing, but that toy-looking 
tutorial will be a letdown for a lot of people.  I say "Begin" both to 
introduce the paragraph, and as part of the link to the toy-looking 
tutorial, in hopes that people who want to dive in will take the nudge 
and skip over the "Begin" link.  You might've had something like that in 
mind.)

Neil V.