Use the arrow keys or space to navigate the slides. Use fullscreen if possible. The tutorial works. If your project doesn't, it means you failed to follow it. Go through again and read closer.
This is the first part in the series. Part two is at: https://scratch.mit.edu/projects/737594825/ You can see the rest of the parts at: https://scratch.mit.edu/studios/32152322 The music a jazz cover of the Wii's Mii Channel theme; the cover was arranged by insaneintherainmusic. I thank @TiberiumFusion, @MathMathMath, @Scratch-Minion, and @Vadik1 for helping me learn how 3D graphics engines work.