if you want to understand, you have to reach out and grab the bull by the horns. I myslef am but a teenager, but I have taken every science course offered by my high school except for physics and ecology. I'm taking summer classes at my community college to rebuild my foundation of math.
If you can, take challenging classes that make you think--perfect example would be a philosophy class or a high-level english class (think AP or IB)
oh, there is a general reply button and a specific reply button. the GR button is to the left, at the bottom page I think. The SR, which I'm using right now, is located under the post you want to reply to. It helps us understand who you are responding to if you use the SR button.