Willing to teach: ImageMagick

[diyadas]

Upvote if interested?

I know a very a little amount, but oddly useful things, like cropping and annotating images from the command line (which can be used to process 100s of images in seconds, if that's your thing) and looping gifs. This would take a fair amount of effort to prepare as a tutorial, so I'd like to judge interest before committing.