CMAT

CMAT is easy. If you are preparing for CAT then no need of separate work for CMAT. The syllabus is almost the same. I was also a student who prepared for CMAT immediately after my graduation. The important things which you should look into while preparing for this exam are as follows:
1. Select one of the best coaching centers which offer quality education- TIME is one of the famous coaching centers for CAT AND CMAT.
2. Dedication- Be focused on the aim which you need to achieve.
3. Try to read Hindu newspaper editorial. Most of the passages which appear in CMAT are from Hindu editorial.
4. Try to maximum number of online mock test. You will definitely clear CMAT by doing the above.
5. Try to read as much as you can and make note of points.
6. Revision of each week topics is very important.
7. Mathematical ability questions will be little twisted try to do as faster as you can.
These are my tips for you to crack both MAT and CAT.

MAT - Management Aptitude Test by AIMA
CMAT - Common Management Admission Test by AICTE
MAT exam:
MAT Exam is conducted four times in a year in the months of February, May, September and December. It is an online test with its scores valid for 1 year. Applicants have to register online only however submission can be made offline as well.
CMAT exam:
CMAT Exam is conducted by the All India Council for Technical Education for the admissions to those colleges which are approved by the Ministry of Human Resource and Development. Applicants have to apply online for the CMAT exam and its exam is conducted in the month of January with its last date of registration is December (tentatively).

One year is a good time to prepare for CMAT test. Candidate should stay focused right from the day one.
As you have twelve month for the final preparation, you can divide the time into two parts:
Phase-1 you can start covering the syllabus and cover different methods, tips and tricks to solve variety of problems. Try to finish the syllabus in initial seven to eight months and keep the rest for revision.
Phase-2 is when you start your revision part. Try solving mocks paper as much as possible this will lead to more accuracy as you learn from your mistakes.
Be focused and calm. For the last month keep all the formulas and tricks handy and revise on a daily basis.
Remember not to be emotional while solving or appearing for exam. Manage your time wisely.
Remember:
A goal without a plan is just a wish.

I would suggest Career Launcher/TIME are the most dignified coaching institutions when it comes to CAT/ CMAT/GMAT.
Career Launcher offers two types of course method so does TIME.
It is basically Full course or a crash course or both.
When there is a comparison done between both, it seems that TIME does not follow any fixed curriculum. Whereas, Career Launcher has its books published.
Either ways both have a strong study material.
Both institutions have flexibility in their timings but Career Launcher seems to have a personal touch.
The lectures usually are conducted on weekends in both the institutions.
If you want to have my personal suggestion then I would choose Career Launcher. This is due to the personal touch and the close attention which they give to their students.
Great support is offered by them regarding the examination and the rules which have to be followed.