I've started and, while the puzzles are indeed difficult, there is a great community coming together to support each other to educate and make the experience very enjoyable. Several clans are open in their approach and are freely willing to catch people up -- check out my blog post for Key #006 - Hive account@loucostello42. You can also find several Telegram communities that are active and friendly -- https://t.me/ToshiCipherUnityHunt, https://t.me/satoshistreasure