Zen Mind, Beginner’s mind advice?

Hello - I have been reading Zen Mind, Beginner’s Mind and I am pretty much brand new to Zen. I was previously studying with a Tibetan tradition of Buddhism that was a lot more concept heavy. Reading this book I pretty much have no idea what the author is talking about. It all sounds like a lot of riddles that I don’t understand. Is that normal? Do people new to Zen usually understand what he’s talking about?