Complete each level by dragging the words into the play area. The barrier will be destroyed and you can [GO TO THE RIGHT].
Insanely difficult target times are best left to professionals or players on their second playthrough.
Use the mouse and either the arrow keys or WASD.
Press R to reset the level.
Press Esc to go back to the level select screen.
Press B if you're feeling sassy (nothing happens, though).