1. The right tools
You will need a new tile, tiling cement and grout. You will need a tile cutter with a diamond cutting disk, a drill with a tile or masonry bit, a masonry chisel, a hammer a notched spatula, a Tyler's float, a tray, a mallet, a cat tongue trowel, a rubber squeegee, a heavy duty sponge and a soft cloth.
You will need a pair of work gloves, safety goggles, a dust mask and a pair of household gloves.