What kind of info are you looking for? In terms of tonal layout and playing techniques, the CX-12 is no different from any other 12 hole chromatic. The unique design means that it’s louder and has a slightly different sound than traditional chromatics, and the larger mouthpiece may be unfamiliar to players of such models, but these differences don’t affect how you play it. There are a number of Youtube videos to help you learn chromatic, from beginners to advanced, also depending on what styles of music you want to play. I googled “Learn to play chromatic harmonica” and found quite a few. So good luck, I hope you enjoy playing your CX-12!