Hello! Hope you are doing good

A number of online lectures are available that provide knowledge and clear concepts on tip. There are a number of platforms like youtube where teachers upload their lectures. For chemistry lectures, you can refer IITian Explains. He clears every concept with perfect examples. For maths, you can refer MathOnGo. In the channel, all the previous years question are discussed.

Solving previous years question papers are important. So look for thw solutions and clear your concepts likewise.

All the best