If you know nothing about a topic and want to become an expert on it, one foolproof way to start is to read good books about the topic.

This is because once you have read a couple of good books on a topic, you will appear to be like an expert to the general public.

Here are some unscientific numbers to describe this.

If you read one book about a topic, you will be able to share knowledge or discuss the topic at an elementary level with almost everyone.

Read three books and you will likely know more than the majority of people and will be able to discuss the topic at an intermediate to expert level.