crack open

verb2

1. •
   (informal) To open (a bottle, can, etc. of drink, especially alcoholic drink), especially in order to celebrate; also extended to other packaged items.

   • Let's crack open a few beers and get the party started.
   • After Christmas dinner we cracked open a box of chocolates.
2. •
   (informal) To start reading (a book).

   • You better crack open that algebra textbook if you plan on passing your mid-term exam.