Unfortunately, it's refusing to load for me tonight.
Each puzzle listed should show the complete puzzle and also display a set of pieces. There aren't any plans or dimensions, as everything is listed in reference to your stock thickness.
Hopefully it will be back up tomorrow.
I'm fairly new to the puzzle world, but I started with Altekruse and a couple of Coffin's work.
For an example off Ishino's site:
Coffin's Wookey Hole puzzle (http://www.asahi-net.or.jp/~rh5k-isn/Puzzle/555/WookeyHole/
Final solution looks like this:
This piece has 9 blocks and 4 copies are needed for the puzzle. (9 units x 4 copies) There are two other required piece types with 4 copies each. There are 17 ways it looks like it goes together, but only one works, and it requires twisting a piece (non-linear movement). (For a starting puzzle, this one can be made of just cubes glued together. Lots of cubes, but just cubes to cut.)
For assembly, (if you don't want to take the time and enjoy assembling the puzzle yourself) there's BurrTools, a great app developed to assemble/disassemble puzzles like these. http://burrtools.sourceforge.net/