Collocations hold great importance when it comes to learning any language. If you know which words go well together with which ones, then it will automatically be easier for you to make sentences right on spot. Don't always check the meaning of a word when you encounter a new one, but also check the word out on a collocations dictionary right away! The one that I love is called Oxford Collocations Dictionary and I highly recommend it to anyone who's learning the language! Cheers and enjoy your day!