These were super easy to install.  All you need is a tape measure, level, and box cutter.  It was an upgrade for my kitchen and easy enough for me to do myself. I did watch a few videos before starting and made quite a few mistakes but nothing that kept me from finishing my project.  These tiles were the cheapest I found.  The website calculates how much you will need if you put in the measurements in sq ft.  I ended up having 1 box left over and it was an easy return.