Profit, Advantage, Gain
Noun and な adjective
とく
お得なクーポン冊子はいかがですか？
Would you like a booklet of bargain coupons?
そんな事して、一体何の得があるっていうの？
What's there to gain from doing something like that?
ルックスがいい人は絶対に得だと思います。
I believe that having good looks is absolutely an advantage.
When you are able to acquire whatever you want, you start to see the benefits of everything around you and begin to profit from them. Aren't you so amazing?
The reading for this is the same as with the kanji you learned. とく!