CAT Preparation

You would basically need to join a crash course now (if you feel like you can't prepare on your own). But in case you are the smart one and think you can practice by yourself - then do so. Nothing better than giving hours and hours of smart work (not hard work) by yourself to CAT preparation. In case, you are also shortlisting the colleges to apply at right now only, then it is a great decision. Organized planning gives better results. I would suggest that LM Thapar School of Management is a must-try. Like you can at least try exploring opportunities and resources present in this Punjab based MBA college. As they have a lovely course curriculum and very helpful faculty. I love the fact that they have a huge luscious green campus to chill within. My cousin studied there and got a good rate of success in placements. The companies coming in like Nestle.
You can apply for admissions here, admissions open now - http://lmtsm.thapar.edu/admissions/apply-online.php.

Yes, you may start preparing for CAT. There is no right time to start preparing for the CAT Exam. Please understand that regular preparation matters a lot more than the total amount of time invested. What I am trying to say is that if you are studying for 20 hours a week, it is much better if you study for 3 hours a day instead of 10 hours on Saturday and Sunday each. It is the discipline which matters. If you are one of those candidates who are not so good with a particular section; then you need to start early. For example, if you are an Science student who is not very good with English then you need to start your CAT preparations. Also, when you start your main focus should be on improving your Verbal Ability because that is your the weakest section. Verbal Ability takes a long time to improve and the easiest way to improve is to read more and more books.