This explains the basics of using the GP-3.
https://www.roland.com/global/product...
Please turn on the subtitles feature ([CC] button) and watch the video.
00:13 Opening the top lid
00:33 Closing the top lid
00:53 Playing with different tones
01:39 Listening to the built-in songs
02:51 Practicing with the metronome
03:49 Recording your playing
04:39 Playing along with your favorite songs (Bluetooth)
05:51 Practicing with someone else
06:36 Transposing into a key that’s easier to play