Don't let the subject matter intimidate you. This exam is mostly memorization, and anyone with an interest in the topic will have a clear advantage. While it does dive deep on a few questions, most of the content reflects the kind of general knowledge you'd find in a magazine like Sky and Telescope or a college-level Astronomy class ;) We've put together study material that will hopefully fill any gaps that you may have in your knowledge. Take your time and you'll be fine.