Every country, regularly participating in IAO has to organize National Astronomy Olympiad (NAO). ... We pointed them as " highly recommended ", " recommended " or (if the way is not optimal, but possible) " possible way " before the paragraph or item. ... The number of stages of the National Olympiad from one to five plus possible training camp. ... Each stage is a separate regional olympiad, its winners and prize-winners participate in the next stage, - up to the final (national) stage. ... Stage . ...