Gaining general knowledge.?

I feel like an idiot, I'm always spaced out. What are some good ways of staying focused. Also things I have missed, like I have a poor vocab and writing skills. I am a political retard - I barely even remember stuff about branches and whatnot. What are some good websites on stuff like this? How can I improve my memory skills, and my comprehension skills? I also have poor social skills, I hope you get what I am explaining... :(