some very simple definitions you should probably give:
consumer surplus: how much less you're actually paying than you would be willing to pay. i.e. if you're paying $1 for a loaf of bread, and you would be willing to pay $2 if you had to, the consumer surplus is $2-$1=$1
producer surplus: how much more you're paying than the producer would be willing to sell for. i.e. if the producer would be willing to sell that bread for $.50, but you're paying $1, producer surplus is $1-$.50=$.50.
deadweight loss is a bit more complicated, but it's basically inefficiency, people buying shit that doesn't benefit them enough to justify the real cost of production because it's artificially cheap (maximizing consumer surplus), or people not being able to buy shit because the pricing that generates the most profit (maximizing producer surplus) is too high for the little benefit it offers them