Hello aspirant ,

There are basically 2 stages in ssb exam

1. Screening tests

2. Post screening test

3. Medical tests

In screening there are-

1. Aptitude test

2. Picture perception and description test.

Post screening tests are

1. Interview

2. Some sort of picture description test , word association test and self description test.

3. GTO tasks

It includes group planning , obstacles ( both individual ,group and commanding ) , GD .

If you clear these then you will be recommended by SSB board for medical tests.

I hope this helps.

Regards

Madhur