Choose a short audio clip at your level.
If you are a beginner or low intermediate, choose something that is about 1-2 minutes; more advanced learners should choose longer clips that are about 3-5 minutes. Make sure you also have the words to the audio clip. You need to be able to check your work!
Here are some suggestions:
Beginners
Read Theory
Super Easy Reading
(These are reading websites, but there are listening clips for each passage.)
Intermediate & Advanced
The English Teacher Melanie Podcast (American accent)
BBC 6-Minute English (British accent)
BBC Words in the News (British accent)
ESLPod (American accent)