I'm All Quarked Up!

So, after a 30 year absence from school, I decided it was time to finish my degree on line through BYU Independent Study. What was I thinking? My brain is full of cotton, mush, cob webs and everything else but scholastic knowledge. My first class (which I have to take to finish general ed requirements), is Physical Science. Ugh!!! I didn't pass it in college and am finding out why. Concepts, principles, models - how do I remember them all? And what in the world is a quark? Never heard of it. Needless to say, I am struggling. It is a good thing I have a whole year to complete this class because I am going to need it. I have a hard time motivating myself to study each day. I procrastinate by doing other "necessary" things - like blogging. Oh well, it will be good exercise for my brain, right? If you have any study hints, I am open for suggestions.