First of all. I recommend that you follow Askiitians regularly as it helps you a lot in your preparation.
And then, you can buy some good books like RD Sharma and AP Dasgupta.
But the bottomline is that you should get over your fear of Maths. I know a lot of people who were having a 'Maths phobia' just like you, but then came out with flying colors. Just think that you can do it, and you definitey can.