Khan Academy is good for the basics and can take you up to the intermediate level. But to master the intermediate level and go for the advanced level, you have to practice from different IMO books or from websites which have IMO type questions; one of which is, of course, brilliant.org.

There are no specific list of topics to be followed. Start learning those which you feel you're weak in. Start solving previous imo papers and if they are too difficult, learn from their solutions (don't just go for the solution immediately after seeing the problem). I prefer seeing only a couple of lines at a time so that I only get a hint at first and then try to solve the problem. If I still can't solve it, I see the next few couple of lines and so on... Try this! And you may buy any IMO book recommended by various websites.

@Fedor Panafidin
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@Maharnab Mitra I meant what do you need to be really good in, for example, great knowledge of set theory wouldn't be as usefull as great knowledge of number theory...

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TopNewestKhan Academy is good for the basics and can take you up to the intermediate level. But to master the intermediate level and go for the advanced level, you have to practice from different IMO books or from websites which have IMO type questions; one of which is, of course, brilliant.org.

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Thank you, but what exactly should i study on Khan Academy? Could you give me names of some of the books?

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There are no specific list of topics to be followed. Start learning those which you feel you're weak in. Start solving previous imo papers and if they are too difficult, learn from their solutions (don't just go for the solution immediately after seeing the problem). I prefer seeing only a couple of lines at a time so that I only get a hint at first and then try to solve the problem. If I still can't solve it, I see the next few couple of lines and so on... Try this! And you may buy any IMO book recommended by various websites.

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@Maharnab Mitra I meant what do you need to be really good in, for example, great knowledge of set theory wouldn't be as usefull as great knowledge of number theory...

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