When you ask somebody to do something in Japanese, you say TE-form verbs and then KUDASAI (Please, or I would ask you to). The TE-form verbs are the conjugated form of verbs that end with TE or DE.
In Lesson 16, you learned to express more than one action in one sentence by linking the TE-form of verbs. If you add the particle KARA (after), after the TE-form of verbs, you can make it clear that ...