I keep seeing references to there being hints and grammar help on lessons but I cannot see them (yet). I'm a complete beginner so doing the practice in Irish is difficult without any lessons!
Click on a skill (the circle things that are gold/different colors). Scroll down. If that lessons has tips and notes, you'll notice them. Not all skills have them, so if you don't see it, don't worry. The ones where you need them should have them.
Unfortunately, there's an A/B test going on at the moment, where new accounts are randomly assigned to one of two groups. One group has access to the Tips & Notes, the other doesn't.