While attending college we might notice that almost all the students have different levels and capacities of hearing and understanding. Not everyone can grasp and understand everything after one lecture. Such listening skills come by habit for many. If you feel that you are lost and you are struggling to understand the concept of the lesson, then do not hesitate to ask questions and doubts to the lecturer. Always keep in mind that it is better to ask help from lecturers rather than being ignorant about your doubts. Try not to ignore important doubts as these doubts may prove to be a problem for you in the future, especially while studying for exams. Make sure that you ask as much as you can from your lecturer and clarify and learn from those doubts, if possible.