I've never heard of camel or hump stitch either. And I have been crocheting for 23 years (since I was 10).
I haven't tried tunisian yet (hoping to get the hook and a broomstick lace hook for Christmas) but it looks pretty fun and simple.
Here's a link to tunisian
http://www.crochetme.com/Apr_May_2005/reads_tunisian.html
And I picked this off another site
CAMEL CROCHET - There's not alot of information available online in regard to Camel Crochet as this is a technique for which the name has been trademarked.
There is a pattern for a Camel Square here:
http://www.digitalgranny.com/va/patterns/camelsquare.html(does not work)
And another pattern here:
http://www.geocities.com/tootsie.geo/pieces/humpgranny.html
"Though I've never tried it I do know a little about this method of crochet.
On the first row, you do stitches in the hump (hence the name camel crochet)
of the chain instead of the top loop. This is what makes it look knitted.
I wasn't sure where to put the stitches in subsequent rows until I saw the
pattern for the "hump granny". The photo that shows the horizontal back thread
helped me visualize where to place the stitches."
Lisa ( http://www.crochetnmore.com/123basics.htm )
Now that I found it I'm gonna have to try it.
Experiment and have fun. That's the whole joy of being creative.
Add: Found another site that helps explain how to start.
http://stitchdiva.com/custom.aspx?id=191
You need to scroll to the last stitch.
Also from what I'm trying it looks best when done in a round like a granny square rather than back and forth. When done back and forth the resulting fabric has a tendency to fold like an accordion. I also tried it as a tube and it looks pretty neat.
Thank-you for asking this question and making me search out a new stitch/method of crochet.