OK all here are a couple tips for you.
1. Juicing fresh lemons. Put a lemon on the counter and place your palm on top and press down rolling the lemon back in forth as if you were massaging it. Then put the lemon(s) in the microwave just to warm them before juicing them. Don't cook them.
2. Purchasing cheese. Assuming you are not buying Velveeta or some processed cheese and want to have good quality cheese, never buy pre-cut cheese. When you are going to spend some money on cheese they should cut it for you there on the spot.