fristly,you should take some notes while you are having lessons. notes can help you review zhe knowledge after class. then, i think you can discuss with your classmates or your study group. don't be afraid of opening your mouse. i probably should introduce you some exra books or movies which can help you learning. because thirdly the more you read and listen, the more you can learn. if i have troble learning english, i will stop reading text books. i will read somrthing interesting in english instead. i think it's also suitable for you learning chinese. you can't put too much stress on yourslef. combine education with recreation(寓教于乐).i am forward to hearing from you again. hoping next time we can meet in person in china.