It depends on how you like your steak!
I know steak can seem scary to cook, but heat is crucial.
For any pan fried steak, brush the steak with oil (not olive, as it burns at high temperatures) , heat the pan until really hot, then pop the steaks in, three mins each side, then turn the heat down a bit and cook for another couple of mins each side again. or longer, if you like well done.
Nigella has a good recipe, which follows on from the above, and is dead easy. While steak is cooking, put 5 thyme stalks , acouple of peeled, bashed garlic cloves, zest and juice of half a lemon and 80mls of olive oil in a shallow dish. When the steak is cooked, stick it in the marinade for four mins each side, then slice and serve with veg.
My exp used to do a sauce for steak which is a guilty secret pleasure, involving mayonnaise, tomato sauce and brandy. Sicky but very morish.