The tutorial systems of Oxford and Cambridge are what sets them apart from lesser learning establishments. You may or not want to end up in one of those universities but you can definitely benefit from top quality tutoring right now, and that starts by contacting mandgctutors.
Here is a quote from Oxford University website:
Regular tutorials ... are the focal point of teaching and learning at Oxford. The tutorial system is one of the most distinctive features of an Oxford education: it ensures that students work closely with tutors throughout their undergraduate careers, and offers a learning experience which is second to none. A typical tutorial is a one-hour meeting between a tutor and one, two, or three students to discuss reading and written work that the students have prepared in advance. It gives students the chance to interact directly with tutors, to engage with them in debate, to exchange ideas and argue, to ask questions, and of course to learn through the discussion of the prepared work.
To sum up a one to one experienced tutor can give you the understanding that will allow you to be able to learn more in class and the confidence gained in one subject often overflows into other areas too.
But really you know when things aren't working!