[plt-scheme] More document (newbie)

Simplifying the language??  

That would be a challenge.
I don't think languages get much simpler.
The only bloat, if any, can be attributed to that double edged sword 
standardization.

The problem I find with getting up to speed isn't the language at all.
It's me. 
25 years of bloated languages addles the brain.
Maybe you are experiencing something similar.
Try not to think in terms of what you already know, come at it fresh.

It's the unlearning curve that needs flattening.