MBA Entrance Exam

It would totally depend on you. First of all you should identify your strong areas and your weak areas. This would only be done if you have evaluated your mock tests properly. Remember that the key to crack CAT is SPEED and ACCURACY. Hence it is important that you solve as many questions as possible correctly. And this would only come with practice. Hence in short, practice as much as you can.

CAT exams are more about practice. It is more speed and accuracy than knowledge (unlike JEE). Questions are essentially very easy and if given sufficient time, you will be able to solve all the questions yourself. Hence you should focus more on practice under exam like situations. Post mock tests you should always evaluate what went right and what went wrong. Try to develop an understanding of your strong areas and the weak ones. Improve on weak areas and continue to do well on your strong areas.

Since you plan to give CAT after three years ,it would be better to now concentrate on your M.Sc & try and score well. Preparation for CAT doesn't require more than 6 months of sincere effort. CAT exams are normally conducted between Nov & Feb ,so one should start preparing 6 months prior to the date of the open test.
Since you plan to pursue MBA after 3 years it is advisable that you pick up a work assignment & gain valuable experience .This work experience will come to your advantage during the campus placement process at MBA

You have to go through internet or buy preparation books.

You can refer this link: https://www.shiksha.com/guide-on-how-to-prepare-gk-for-competitive-exams-article-6890-1

You can just type on google play store "current affairs app for MBA preparation". Their you will find list of application. And according to your need you can download.

Exam Required-CAT 90 %tile | CMAT | XAT 80 %tile
https://www.shiksha.com/mba/course/post-graduate-diploma-management-goa-institute-management/74615

These are some of the best Coaching centers which offer Excellent Coaching for CAT in India :
1.Career Launcher
2. IMS
3. TIME
4. Bulls Eye
5. PT Education
Just check their site out to locate their center in your city.
All the best !

Hii
These are some of the best Coaching centers which offer Excellent Coaching for CAT in India :
1.Career Launcher
2. IMS
3. TIME
4. Bulls Eye
5. PT Education
Just check their site out to locate their centre in your city.
All the best !