Here's one great tip...don't buy cheap Wal-Mart steaks like the keep hyping up on Master Chef. Did anybody see that last night? The most pathetic, thinnest steaks I have seen in a long time. Go to a local butcher or if you can, buy from a local farmer. I've been getting great, 100% grass fed beef from a local guy that sells at our Farmer's Market. While it may cost a bit more, its well worth it.
+1. This should be the 11th Secret. In fact it ought to be the 1st Secret and then the other 10 should be moved down the list. I saw those pathetic steaks, too, Griffin.
Now this isn't to say that all supermarket steaks are bad, but sometimes you need to go digging a bit on the shelves to find a good steak. Some supermarkets also have a specialty meat counter and you can sometimes get some good deals there. However, avoid the eye-catchers like stuffed tenderloin or stuffed pork chops because they are overpriced (since you can stuff them yourself better and cheaper), and because you simply do not know how long the meat has been sitting there.
But supermarkets are a second-choice option compared to a good butcher shop or market. I'm fortunate enough to live close to 3 of them, and they're worth the extra cost. They can also get you uncommon cuts of meat as well, like chuck-eye steaks (because they actually know what those are). Tri-tips are another good example: they're not always a well-known cut in some regions but a good butcher will know them well and know how to trim them right. And of course, butcher shops are great for finding brisket and whole hogs of all sizes, which again aren't always readily available in some regions.