How do I use Fleming's left-hand rule without getting the directions wrong?

Fleming's left-hand rule is used to find the direction of force on a current-carrying conductor in a magnetic field. Hold the thumb, first finger, and second finger of your LEFT hand all at right angles to each other. The First finger points along the Field (from North to South), the seCond finger points along the Current (direction of conventional current), and the thuMb then points along the Motion or force. A memory trick: First-Field, seCond-Current, thuMb-Motion. Always use the left hand for the motor effect (force on a current). Save the right hand for the generator effect (induced current). Set up your fingers carefully each time and read off the thumb's direction; with a little practice it becomes automatic.