Forgive me, but I am clueless on Praxeolgy

I tried to read certain articles and even Wiki to understand the concept, but I can’t exactly wrap my head around it. But this is what I got:

Praxeology is the study or scientific method of.. action? Based on the needs of the individual to achieve his happiness regardless of what is intended?

Please correct me if I am dreadfully wrong.

Praxis is latin for action or movement.

ology is the study of a discipline.

Praxe-ology

A conjuctive of action - the study of

Praxeology =The study of action.

Purposeful behavior is action and action is utilized in the application of means toward given ends.

lol i was just lookin into this a few dayy ago and found this in the beginner thread: (Praxeology playlist)