Dear Student,

the option is as per your choice and your motive. If we have to debate which is better it would be quite difficult as this solely depends on the student and how his or hers studying pattern. If you think you would be able to do revision all on your own then you can do so or if you feel like it would be more helpful if someone would guide you through the process of revision you can go for crash courses as well. Try and choose an option that would be more suited to you as time is less and you would need to give all your attention to your studies.

If you do want to revision by yourself it is best you solve precious years question papers as they are very helpful to give you an insight as to how the questions are asked in the examination.