NCERT most important. NCERT should be on your fingertips. Other than that, for reference, use OP Tandon and MS Chouhan.
Practice previous year questions MANY TIMES . Become perfect in them. Solve other people’s doubts. These will help you score better. You should focus on limited material and do it more number of times !! Many questions ask only basic concepts. Self study is definitely most important. But coaching really helps you score more and you can also appear for a test series and analyse it properly (Giving 2–3 hours), find your strong points and chapters, work on them.
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