dip into something phrasal verb ( see also ↑ dip )
1 . to read short parts of a book, magazine etc, but not the whole thing:
It’s the kind of book you can dip into now and again.
2 . to use some of an amount of money that you have:
Medical bills forced her to dip into her savings.
Parents are being asked to dip into their pockets for new school books (=use their own money to pay for them) .
3 . to put your hand into a bag or box in order to take out one of the things inside:
On her lap was a bag of candy which she kept dipping into.