Open a web browser on your laptop
Go to a legal music website or streaming service that allows downloads
Sign in to your account if required
Search for the song you want
Check whether the song has a download option
Click the download button or download icon
Choose a folder to save the file if prompted
Wait for the download to finish
Open the Downloads folder or the chosen location
Play the song using a music player on your laptop
If needed, use an official app to download songs for offline listening
Make sure you have permission to download the song and follow copyright rules