If you have never installed tile, this is not the way to start. First, it's highly visible in your kitchen. Second, it's marble which is more difficult to cut than ceramic. Third, it's TINY pieces, which, if you have to cut them, are impossible to hold in a wet saw. Fourth, you will be cutting HUNDREDS of these tiny pieces, to fit around objects and at edges. Fifth, with such a tight placing on the mesh, ANY deviation of fitting between sheets will result in very visible zipper lines from a distance, ruining the look. I am an advanced DIY with a lot of tile projects, and I would not touch this installation (extremely tedious to get the cuts correct, and the chances in a $15 per square foot mesh-ed tile are that they are laid on the mesh not perfectly and zipper lines will result between sheets - NOTHING you can do if they are laid on the mesh other than perfectly in a tight fit matrix like this). You are likely to end up with zipper lines. I will say it's a gorgeous look - I love it!

You could possibly handle the 3x6 tiles with a proper wet saw and a ton of tile spacers if you are very skilled at learning new craft in general and working with tools.

But marble tile in general is not a good first learning project in a highly visible location! And TINY strip mosaic pieces are about the most tedious and difficult to cut accurately. Without accurate cuts, the install will look rough and awful on a refined look like this, in your kitchen. I'm just trying to save you potential agony and cost!