This is a tutorial book that I made and uploaded to Flickr back in 2016. This details my usual process when I created artwork using GIMP 2.6/2.8. It's over 160 pages long, split up into 10 chapters. Please note that today, I don't use GIMP anymore and have since switched to Clip Studio Paint. I'm not certain if some of the steps are still applicable to the current version of GIMP.