Saddle Stitch Hand stitching
Learn the fundamental skills you need to start working with leather by making simple accessories you can customize! Learn: cutting, gouging, folding, hand sewing, gluing, riveting, adding hardware, and creating simple details.
DIY Leather Passport Holder with Temporary Tattoo Tutorial
This is the most comprehensive leather tutorial I've found, great pictures, MANY techniques and good tips
How to saddle stitch leather style + lots of other working with leather tutorials
HOW TO make your own close-ended plaited leather wristband or belt. ...Ignoring the bottom part as you plait, count up to 6. Once you get to six, start untangling.
How to Prepare leather for sewing http://www.instructables.com/id/how-to-prepare-leather-for-sewing/
Use a fork to mark evenly spaced holes in leather. Drill with dremel tool.
Running With Scissors: How To Finish Leather Edges
Magic Braided Leather. Cool arts and crafts trick!