The best way to understand OODA Loop is to look at some examples of OODA Loop and start drawing your own. You can now modify the OODA Loop example below using Visual Paradigm's online OODA Loop tool.
The OODA loop represents Observe, Orient, Decide and Act. It was developed by military strategist and United States Air Force Colonel John Boyd. Boyd for military purposes. It is now also often applied to understand commercial operations and learning processes. The approach explains how agility can overcome raw power in dealing with human opponents
OODA Loop can be easily created using a professional OODA Loop software like Visual Paradigm Online: