Things may not have been as simple in the past as they currently are when it comes to getting help with your course work. If you are serious about performing well in your exams and in learning in a better way then there are countless resources available online that could help you proceed in the right direction.
You just need to be willing and motivated in order to benefit from everything available to help you improve your learning experience. There are freely available resources that you could benefit from however when you are serious and you want to take things to a whole new level then there are paid resources too that would help you in a much better way.
Some of the popular websites or resources that you could benefit from regardless of the nature of your coursework include Chegg and Course Hero. In the past they might have simply been textbook publishing sites but they are now a complete resource centre for students of all levels.
To get further details on what Chegg and Course Hero are and how they could help you, together with what their similarities and differences are, you may want to check https://medium.com/@yuvalaharon21/comparisons-between-chegg-and-course-hero-20e91e0f8757 out. Course help may not be needed or necessary for everyone but if you can spare time going through these sites then they would definitely help you perform better.