Rev. Marx at MRX Designs recently shared a clear, simple, to-the-point tutorial on reinforcing an old, tattered paperback's spine and rebinding it in hardcover with leather, using a french groove hinge.
The results are truly beautiful, and I am quite fond of the book he bound using
the leather from a bomber jacket a leather of a color described as "bomber jacket" (thank you for correcting my mistake!)(illustrated above). The texture and color of the leather adds so much character to the book!
Take a look at the tutorial