Hello,

I hope you are doing well!

So in order to pass a subject, you have to score atleast 33% marks or more in that subject for class 12th.

You can prepare for your exam either by studying yourself at home or you can take tutions.

If you are planning to study by yourself, then you can take help from youtube as a lot of free courses are available there. I myself studied from youtube and cleared my maths with 80% in 12th.

And if you want one to one coaching  then you can study offline by visiting tution centres near you or you can hire a tutor who can come to your home to teach you.

But if free courses are available, then why to waste money right! I will recommend that you should take free online classes on youtube.