Rubik's Cube
How to solve the 3x3x3 (7-Step Method)
How to solve the 3x3x3 (Speed Cubing)
Two-look OLL (YouTube Video)
PLL or Two-look PLL (YouTube Video)
How to solve the 2x2x2
Solve first layer, then one of two algorithms.
Use the Two-look OLL and PLL as above, treating the cross as solved.
How to solve the 4x4x4
http://www.speedcubing.com/chris/4-step3.html
How to solve the Pyraminx
https://ruwix.com/twisty-puzzles/pyraminx-triangle-rubiks-cube/
Solving the Pyraminx Video