Expert shopping means buying things after doing some research to make sure you get the best value for your money.
Imagine you want to buy a toy. An expert shopper would first look at different stores to see which one has the toy for the best price. They might also look at reviews online to see if other kids like the toy and if it's good quality (meaning it won't break easily).
Expert shoppers don't just look at the price tag or the packaging. They use their brains to think about what they need and what will make them happy in the long run. They also ask questions and compare different options before making a decision.
So the next time you go shopping, try to be an expert shopper too! Think about what you really need and take the time to find the best value for your money.