LEADERSHIP PRINCIPLES
On different websites, they have different orders. Ugh. For right now, glance through this, but when you get your academic knowledge book, defer to that please!
Know yourself and seek self-improvement
Be technically and tactically proficient
Know your people and look out for their welfare
Keep your personnel informed
Set the example
Ensure that the task is understood, supervised, and accomplished
Train your Marines and sailors as a team
Make sound and timely decisions
Develop a sense of responsibility among your subordinates
Employ your command within its capabilities
Seek responsibilities and take responsibility
Here is a link to them, from a Marine Corps source.
You will need to know these in order!