If you think you might be an olive oil convert, congratulations! But a few words of caution are in order. Always keep your bottle of oil out of light and away from heat to prevent it from becoming rancid. Perhaps more importantly, remember that although olive oil can be a healthy ingredient, it is still a fat containing 9 calories/gram. So as with all fats, watch your intake.
If you want to try any variety of olive oil as a substitute for margarine or butter in your own recipes, here is a convenient conversion chart to help you figure out the proper measurements: