ask question my personal preference

Most students find that sitting near the front of the class and maintaining eye contact with the instructor is helpful in concentration, but that is a matter of personal preference. Find out early in your college career what works best for you. Don't shy away from the more active parts of the classroom. The more difficult you find the class, the more you want to engage yourself in the learning that is going on in that class.

Speak up and ask for clarification if something isn't clear. to pay attention and absorb the significant elements of a given situation, whether it's a lecture, class discussion, or textbook assignment. With your powers of concentration working at peak efficiency, you can devote more of your study and homework time to exploring subjects in greater depth. Paying attention in class will not only help raise your grades; it will also give you more free time for pursuing other interests. Learning to concentrate on your college studies fosters a skill that will carry over happily into every aspect of your learning and working life.

It's definitely to your advantage to work on overcoming whatever shyness you have about speaking up in class and asking questions. You can't be well prepared in a subject you don't understand. Remember that the only stupid question is one that isn't asked.