Preformed laminate countertops come in a wide range of designs and lengths, and can be found at most home improvement outlets. Do-it-yourselfers will find this to be a straightforward way to install them. However, not all kitchen counters are laid out in a perfectly straight line. If the space has a corner, you will need to acquire countertop material that already has the corners miter-cut according to the dimensions of your kitchen. After that, putting the two halves of the countertop together and positioning them appropriately on the cabinetry is a very straightforward process.