Wondermat is very easy to work with provided you have the correct tools on hand.  The two most important tools you will need is a standard utility knife and a THIN Metal ruler.  Since a sharp blade is the key to making a professional (and easy) cut, you should have spare replacement blades on hand.  Depending on the tile size you are cutting, you will want either a 24 or 36-inchTHIN Metal ruler to use as a cutting guide and to save your fingers from the sharp tool you are about to use. Metal rules, utility knifes and extra blades can be found at almost any hardware store or home center.