Recording audio is an interesting way to keep customers coming back to your website. It's also a great way to create digital products to sell online.
Better than writing a book
If you don't have the time and money to write and publish a book you should consider starting a podcast. There are so many ways that you can make your recording much more interesting than reading a book.
1. Add dramatic music and sound effects. Because you're working with an audio file you have a ton of flexibility.
2. Bring on interesting guests whos personal story could add a different perspective and a new layer of value.
3. Record your audience's questions. This could potentially create more customers, tons of value for your listeners, a lot more than that of which you could have created on your own.