Too many people take their steaks directly from the chilly fridge to the hot fire. You will not get an evenly cooked steak this way—the outside of the meat will cook faster than the inside. It is best to take the steaks out of the fridge about half an hour before you plan to cook them; remove the wrapping, place on a plate, and let them come up to room temperature on the kitchen counter.
Reassemble the grill, then turn it on to its highest temperature setting and close the hood. There may even be a cleaning level on your burner dials. After a few minutes, open the lid and scrape the grates vigorously with a non-bristle metal grill brush. One I particularly like is the $15 Grill Bristleless Scraper from Taylor. This brush has multiple surfaces and edges to attack and remove grime from grill grates. It even has a handy bottle opener.
For metal and cast iron grill grates, coat lightly with a high temperature oil like Canola or Peanut oil – wipe off any excessive oil, install the grates and fire up the grill. Heat the grill on high and let it burn for ~30 mins. This will burn all the solvents and impurities off of the heating elements, grill grates, etc. Note that porcelain grates won’t need a coat of oil, but will benefit from the burn in process to remove any chemicals/impurities that were applied by the manufacturer.
No matter what you are grilling, you should always begin with clean grill grates. Not only does this make it easier to flip and remove the food from the grill but it also does not impart any flavors from previous grilled meals, such as barbecued chicken, into the steaks. Make sure to clean your cooking grate using a stiff wire brush. It is best to do this after you've finished grilling while the grates are still warm, but you can also clean the grill while it is preheating if you discover caked on residue. Taking the time to brush off old bits of cooked-on food will pay off handsomely when your steaks release from the cooking grate with ease.
Transfer the steaks to cooling racks with a sheet pan or cookie sheet underneath, cover the whole tray with plastic wrap and stick them in the fridge. Take them out about 30 minutes before cooking, pat them dry again with paper towels (because the salt will pull out some juices), season with freshly ground black pepper (press the pepper into the meat as you did with the salt) and then grill as you normally would. We'll talk more about black pepper in a moment. As for patting the steaks dry, a dry steak will form a browner crust when it's cooked.