There is only one author of the OBW's and she has 3 books out. The first two explain the process better than the 3rd one. The 3rd one is geared more towards already having that knowledge, adding cube blocks, and different quilt shapes/layouts.
S&W blocks use the same technique to get the repeated block pieces and can be other shapes besides hexagons.
Other Kaleidoscope type blocks may use the above technique or may be fussy cuts out of the fabric to get the repeats. :D:D:D