Here's the link to the presets (bells, basses, plucks, and synths): https://bit.ly/2ZHViLv
I think this could be helpful for some people in here. The only thing I don't go over in the video is the Midi section.
I noticed there's really not any good tutorials of GMS on YouTube and I think it's an amazing synth that is often overlooked.
PS Feel free to let me know if missed something or didn't explain something correctly in here. Thanks