Outdoor Slate Fountain Installing Slate Tile To Outdoor Steps/apron, Will Any Slate Tile Work? Any Secret Tips? HELP!?

Installing slate tile to outdoor steps/apron, will any slate tile work? Any secret tips? HELP!? - outdoor slate fountain

Current crumbling surface of concrete measures (the start. I want this patch of cement, covered with slate and install on existing measures. Is there a working slate and tile grout if? The tiles are to spend the winter in Chicago Seal HELP?