You graphics artists and typesetters out there will think this silly, because I am sure this was one of the first things you learned as you started the pursuit of your art. I stumbled across this concept on the internet, and as I was pursuing it a bit, just to satisfy the curiosity, you know, I found this website done by Mark McKay in which one can practice kerning skills.
I hope you don't find this too addictive.
btw, on my first attempt, I hit 100% on three of the ten examples, though my overall score at 78 was less than stellar.Eyeball update: Yesterday the surgeon officially pronounced my vision "better than it was before we started." I already knew that. Also, he removed the stitch and said he would see me in a month.