Hi,

There are many institutes for preparation of CAT. I have provided the list of some of the best institutes:

• Bull's Eye- They have both regular classroom preparation and online preparation products.
• Byju's Classes- They have both regular classroom preparation and online preparation products.
• Carrer Launcher
• MBAguru
• TIME
• IMS

You can prefer any one of them. But your self study is also important along with the classes.

All the best!!