Intelligence and learning are two different things, yet they have much to do with each other. Intelligence allows one to learn (at some level), but the more one learns, the more one can cultivate and develop intelligence. "Iron sharpeneth iron" and the cycle continues and improves.
Here are some pieces of wisdom, some bits of advice, some insight, and some quotes that relate to the subjects of intelligence and learning.
Learn language, develop your vocabulary, and understand word origins to expand your ability to comprehend what you read. Then study economics, history, and psychology if you want to learn the things that will most likely make you successful.
"Once you understand something well enough, you don't need to run from it."
- Robert Pirsig
"A person's dependence ends when they acquire the knowledge that those whom they depend on possess. In other words,Freedom comes with Knowledge. The global elite know this and have molded society to work in their favor by keeping the masses ignorant."
- Roger S. Bullock (http://www.theforbiddenknowledge.com/jeffrense/index.htm)
Formal education will make you a living. Self-education will make you a fortune.