Cant afford steak, im still.on that goverment cheese #jayz
You don't have to go to a restaurant to enjoy good steak. Go to a butcher, even at your grocery store and get a prime cut of ribeye. Cook it at least medium and give it a try. The diagram MegaTronBomb posted is a good guide. Best way to get a good idea of how cooked your steak is by pressing on it with your index finger. The harder it feels, the more cooked it is. Keep in mind, since you're at home, you can cut the end if you're not sure it's cooked well enough. Make sure you don't cook that shyt to oblivion though. And once it's done, let it sit for at least 5 minutes, 10 minutes is ideal. Letting the meat sit redistributes the juices throughout the meat.
Also, if you're going to a restaurant, unless they're known for their steaks, avoid ordering it. If you do, you're really better off getting it medium-rare/medium, unless you really want bottom of the barrel shyt. Personally, I would never order steak at places like Chillis, or Fridays. I don't even order steaks from Cheesecake. If I want a steak while I'm out and I don't want to pay $55 to go to Morton's or Ruth Chris, or other high end steak houses, you can get a decent one at Outback or Longhorns.