Norm Dresner wrote:
> Okay, I just had my mind blown by discovering that using blending modes with
> adjustment layers can give all sorts of bizarre effects. And another
> explosion occurred when I started to paint with black on a Levels layer set
> to Lighten mode and discovered that it could be made to darken areas painted
> over.
>
> Aside from long and protracted experimentation, is there anywhere to learn
> about such complex topics? A book? A web site?
>
> TIA
> Norm
>

There's a lot of free tutorials on YouTube. Some of them may be ful.