Of course everything arrived in the wrong order!
The first thing to arrive was Kim Guzman's Tunisian Crochet Stitch Guide, which of course made no sense to me whatsoever because Tunisian crochet is very different to ordinary crochet.
The second thing to arrive was Ultimate Beginner's Guide To Tunisian Crochet, also by Kim Guzman. I looked at it. I wanted to get started right away -- but I only had ordinary crochet hooks. So I improvised. :) A small rubber band wrapped tightly around the end of the hook prevented the stitches falling off and I could try my first piece of Tunisian crochet.
Here is my entire output of Tunisian crochet to date. As you can see, I kept losing and gaining stitches! The sides wend their way in and out. It's like being 7 all over again and learning to knit. :)
Anyway, after doing this practice piece, though I wouldn't say that I have mastered Tunisian crochet yet, I think I'm ready to try making something using this new (to me) technique.
Now I just need the proper hooks so I can do things that are more than 15-20 stitches wide...