Can someone here recommend me a few books to begin with Olympiad level Maths? I know that I am ineligible to participate in any of the Olympiads now but I like learning more about the subject. Being a member of this place for quite some time, I have seen some really smart people. I am curious as to what books did they begin with? Going to an instructor is not an option for me as there is none in my city. Please do not recommend any online learning resource.
Any suggestions are greatly appreciated! Thanks!