Question about rank structure

Hey Everyone,
Just a quick question. I have a command IST tomorrow morning and im studying my rank structure. For the life of me and I cant remember how to respond to the question, for example, what is an E-2 in the Marine Corps. Also, on the officer side of things, how do i say what a Colonel is? Do i say "Sir, an O-6 in the Marine Corps is a colonel. he wears.....what? a bird? Im just not sure. if anyone could break it down for me thatd be great. i tried typing into google a bunch of ways and couldnt find anything. Thanks in advance!

-Poolee Denero

It is a simple search..."Marine Corps rank"...............

http://www.marines.mil/usmc/Pages/Ranks.aspx

i know all of the ranks.. just didnt know how to reply when asked. for instance "sir, an e-3 in the Marine Corps is a Lance Corporal, he wears one strip up with crossed rifles in the center, sir!" but thanks anyways. i figured it out! Much appreciated

Edit because I hadn't noticed you said you figured it out. Best of luck at recruit training.