Also - you'll find that you are not alone. College can be intimidating at first. Good teachers usually help set up study groups so that students can learn from each other. Sometimes as John suggests tutoring a specific course is necessary, but often times learning from your peers in a class can really help and you don't have to feel like your are asking stupid questions. College is a time for you to experiment and figure out new ways to learn as well as find the things that become your passion. If you are fortunate to find that passion, you'll find that you'll learn more than you ever thought possible.
You'll quickly notice the difference in resources available to you in college than perhaps you've been accustomed to in high school. The classes are much larger and after meeting your classmates, usually there are several small groups that are formed to work on projects and study for examinations. There is the library and traditional tutoring methods offered by grad students looking to earn extra $$, so you may want to keep an eye out at the student union or around campus for signs. However, you need to figure out what works best for you, and be disciplined to make the time in your day for studying or exam preparation. As you'll soon find out, the campus will have many distractions and events that will consume much of your time. Good luck!