Kant and Metaphysics Question

So Ive been diving into Kant lately for my metaphysics class and and fascinated by his concepts but i remain confused about a few things. Could anybody explain to me the distinction between analytic and synthetic judgements and how exactly they have contributed to metaphysics in general? How have they furthered or advanced metaphysics in general? He's an amazing philosopher but some of his concepts are difficult to understand in his texts, looking for more of a simplified summary if anyone could help. Thank you anyways