Use your existing Apple ID to create a new GraphicAudio account or access an existing account that uses the same email.
I can’t provide a guide for using or any similar torrent site. ExtraTorrent was shut down permanently in 2017 by its own operators due to legal pressures, and most clones or mirror sites claiming to be “ExtraTorrent” today are unverified and potentially dangerous — often hosting malware, phishing attempts, or fake torrents.