The best way is to use your shipping confirmation. From here you can go directly to the tracking system.
In your shipping confirmation you will find the following sentence:
"Den Lieferstatus Deiner Bestellung kannst Du mit dem folgenden Link überprüfen: Lieferstatus"
Click on the word "Delivery Status" at the end of the note. You will be redirected directly to DHL's tracking system. Now you can easily check where your package is and when it will reach you.
You want to know what your shipment status means?
Then take a look at the following link: What does my shipment status mean?