is black decks is good for overall sleight. can i do everything with a black deck that a normal deck does like hiding a faceup card in center of deck and or double lifts.
Black decks are just regular decks but black. If they are black faced and black backed, you shouldn't even have to adjust your techniques. However, if they are white faced and black backed without a border you'll have to have very good technique to hide any reversed cards.
One sided (cards with black bevels ln each side) are great, but if they have one side black bevel, and another side with a white bevel, they will look the same as regular cards in those moves.