i saw that most normal type pokemon can be found somewhere-either on maps, or on games corner, or lucky dip, or promos, or from towers. where can i get mew from? i mean, we can get mewtwo and it is evolved form of mew and also it is worth 500 coins, so mew should be lesser value and should be available somewhere?

You can't get a mew it's in the game because it was a contest Pokemon I think or a promo maybe?

You can't get it in the game, yep. And Mewtwo isn't the evolved form of Mew oO It's its clone...
Maybe my memory is bad, but didin't a moderator asked you to post all your questions in one topic ?