When it comes to grilling a steak, there are a few key things to remember. For one, know your cut and buy it fresh (red with fat marbled throughout). The best cuts for the grill are the rib-eye, top sirloin, top loin, T-bone and tenderloin. Secondly, preheat your grill! Last, but not least, invest in a meat thermometer that lists the right temperatures for doneness.