Recommended tools for installation.    Apply thinnest with a trowel. Place tiles on the thinnest. Get tiles close together. Lightly tap down the tile make sure not to sink tile.   Seal the tiles with
a good quality penetrating sealer.
  Apply a sanded grout on 2" x 2" sections until covered.  30 min after grout dries remove excess grout.    Sponge off the grout until the desired look is reached.