Go to this website.
Press down the Strg key and click on Collocations, so that it opens in a new tab. Choose at least FIVE words and do the exercises. If you don’t know any words, look them up (in a separate tab) in the LDOCE and if necessary at PONS. During or at the end of each exercise click on Check, Correct answer, Review answers etc. and LEARN the correct answer.
Go back to the table of contents (Inhaltsverzeichnis) and open Phrasal verbs in a new tab. Again choose at least FIVE words and do the exercises.
Finally go back to the table of contents and open Word formation in a new tab. Do at least THREE exercises that interest you.