i am a B.E. student.....i want to knoe that now my 4th sem exam has been over and i am free yet ,what do i do in free time about any courses

Apart from what Pooja ji has rightly advised you can also think of learning some foreign language such as German or French during your vaccation.

Hi Shrish, There are several short term courses available through Institutes like CDAC etc. for engineering students. As you have not mentioned your branch it would be difficult to name any courses. However, for further details please check the link below: https://it.shiksha.com/getCategoryPage/co