Open iTunes on your computer and then choose Music.
Tap on the For You menu, and click on the free trial offer. After that, select the subscription type from the 3 kinds of subscription plans - Individual, Family, or College Student. You are recommended to choose the Student plan if you are a college student.
Log into your Apple Music account with your Apple ID and passcode. You need to confirm the payment message to begin the 3 months free trial.
First of all launch TunesKit Audio Converter. Click the Add Files button to import Apple Music songs and other audios. It is also applicable for iTunes or Audible audiobooks.
Now the files may be imported to iTunes converter for Mac as expected. At this point, you should open the Format panel and choose the output format you would like to convert the Apple Music to. It supports M4A, M4B, AAC, WAV, FLAC, and MP3 at present. You are also allowed to customize the audio properties like sample rate, codec, or channel, etc.
Press the Convert button to convert the protected Apple Music to MP3. When it completes the conversion, you are able to locate the converted files and transfer them to any popular devices for playback.
For more: Get Free Apple Music Forever