Although this puzzles looks complicated it's actually just a standard rubik's cube! The parts inclueded glue onto a mini rubik's cube and turn it into a much more extrodnary puzzle. Also, because it uses extentions there is no cutting or sculpting needed to make the puzzle. Most of the pieces print without or with little support.
The number of copies of each part that you have to print are denoted by the number at the end of the part (eg print 6 of center 6). After printing the pieces sand the inner flat faces. Roughen up the mini 3x3 with 50-100 grit sand paper and glue the extensions onto the cube. After you're done you can sand/polish the exterior to help the stickers stick.
You need a mini 3x3 to make this cube. The one I used can be bought here for a couple bucks and comes with a removable keychain: https://thecubicle.us/mofang-jiaoshi-mini-keychain-cube-30cm-p-9716.html