Could anyone recommend some introductory reading on orbital math? I had an idea rolling around in my brain for a while to make a little website simulating how v

Could anyone recommend some introductory reading on orbital math? I had an idea rolling around in my brain for a while to make a little website simulating how various mathematicians and philosophers visualized the moon's orbit over the centuries, but I'm not great at math, lunar history, or math lunar history, so I'm curious where I'd get started on the reading.