Frame your space by placing a ring of tiles around the entire perimeter of the area you want to tile. This group of tiles is called an edging course. You can use the same type of tiles that you will use in your herringbone layout but you don't have to.
Pick one side of the area to be the front side. You will start installing tiles on the back of the layout and then work your way to the front. Selecting a side to be the front will help you understand where to place each tile.
Place your first tile vertically against the top left corner of the area. Align the tile flush with the left side and top side of the space.
Put a second tile to the right of the first. Align this tile horizontally and place the bottom edge flush with the bottom edge of the first tile. These two pieces will create an "L" shape with a short vertical section and long horizontal section.
Place the third tile vertically underneath the horizontal piece. Align the right side of the tile with the right end of the horizontal piece. Continue to place horizontal and vertical tiles in the same manner, creating a step pattern all the way to the bottom of the work area.
Move back to the original vertical tile and place a horizontal tile directly beneath it. Align the left end of the horizontal tile with the left edge of the first tile, which will place the left end of the horizontal piece against your edging course.
Put an vertical tile underneath the horizontal tile, with the right edge aligned with the right end of the horizontal tile. Continue to place horizontal and vertical tiles beneath each other until you reach the bottom of the area.
Repeat this process of alternating horizontal and vertical tiles until you fill the entire area. Along the edges you will have pieces that don't fit into the area. Cut the excess tile away so that the piece will fit.