I'm a newbie too......many thanks for the link to the iphone ringtones. Much appreciated that you take the time to share this.
I used Ringtone Maker, free from GooglePlay, to edit and save. It is real easy to use.
Go to the play store and look up iPhone ring tones and iPhone alert tones. I found glass in one of those. Easy to install, too. I had to go to notifications and volume to get the sound to a proper level. That, too, was pretty easy to do.