Hey.

The choice between preparing at home or at an institute depends on various factors. After joining an institute, you can get proper guidance regarding the way to attempt, syllabus, and you can get your doubts cleared any time. You will also get refined material for studying too. But if you choose to study at home, like many people do, you should make sure you have the best material to study from, you have proper guidance and a source to clear your doubts from like any seniors or teachers or friends. Self studying and practice is of utmost importance while preparing for competitive exams like these. You can also refer to videos uploaded by people on youtube or any study channels for a better clarity. You can use the link below for tips and best study material-

https://bschool.careers360.com/articles/cat-preparation-tips-for-beginners/amp

https://www.google.com/amp/s/bschool.careers360.com/articles/best-books-for-cat-preparation/amp

Best of luck