I realize questions about Olympiads have already been asked till death, but I think I haven't seen mine popping out anywhere, so here goes. Does anyone have any ideas on how to prep for the practical round of a physics Olympiad (not the IPhO, a national one). I can get papers for the I & APhO, but not for the national one as my country does not release the papers. But in general, rather than simply doing the papers (which i already am), I would like some hints and advice on what areas to watch out for/ any prior practices or books I might want to look up, stuff like that. My theory round was just days ago, and the practical will be sometime mid November, so I have about a month to prep. Thanks!