Most organists feel that reducing motion is one of the keys to excellent organ playing. Excessive motion requires more time to execute, and often translates to unmusical and unintended rhythmic irregularities.
With this in mind, let us consider the various fingering techniques in the context of efficiency of motion. This will be a valuable perspective as you attempt to finger and learn music on your own. If a passage can be fingered with a technique that requires less motion and that seems more natural, you will play with more relaxation, confidence, and control.