The Miscellaneous tools do a number of useful things without fitting neatly into a category. The Paths tool takes Selections up a notch and also lets you add interesting effects. Zoom is one you would use every day, and Measure is handy in some situations. Finally, GEGL Operations are the future of all GIMP development


Links:

https://docs.gimp.org/2.8/en/
https://en.wikipedia.org/wiki/B%C3%A9zier_curve
https://en.wikipedia.org/wiki/Font_hinting
https://www.webopedia.com/TERM/A/antialiasing.html
https://docs.gimp.org/2.8/en/gimp-tool-gegl.html
https://docs.gimp.org/2.10/en/gimp-tool-gegl.html
https://www.youtube.com/watch?v=aEsqVMCgpJ8
https://www.patreon.com/m/649544/posts
https://www.ahuka.com/gimp/miscellaneous-tools/