So I just got my AR and I am a total noob to them. Dont laugh, but I have a class at Gander Mountain this weekend to learn about the AR. Some range time, teardowns and such. Sounded like a fun afternoon hanging out with other gun guys and learning something I probably dont know. Now, since I just got my AR and havent even shot it yet, what do you recommend I do before I take it out there? Brakedown and clean I am sure - so I will probably check some youtube videos today but is there anything I should focus on?