Having recently come across this introduction to Factor, I've been a bit curious to learn more. Aside from the official FAQ mentioned there, do you have resources for learning the language (as well as the stack-based "paradigm," if that's the right word) that you've found helpful?
As a side note, would learning Forth help, or is that like comparing C to Python (or what have you)?
You can start here: http://concatenative.org/wiki/view/Factor
And there's a nice documentation included in the runtime/GUI. Just install and then "Browser" and you see the documentation with topics like "Your first program".
The documentation is available online, too: http://docs.factorcode.org/
(It's the same as the one you get when you install Factor.)
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