(Sexy), aka "Sexy move", represents the four moves: R U R' U'. Check out the page on the Speed Solving wiki for more info.
(Sled), aka "Sledgehammer", represents the four moves: R' F R F'. Check out the page on the Speed Solving wiki for more info.
I made this page to help me study the seven algorithms of the OCLL step of 2-Look OLL for solving rubik's cubes. The Speed Solving wiki page for 2-Look OLL is here.
The algorithms listed here are just one of many possible algorithms you could use per scenario. Click the name of a given algorithm to go to its wiki page and see the other alternatives.