Write a blog post that answers a frequently asked question (and then promote that blog post via two different types of content/channels).
If you completed Quest 30, you'll know that answering Frequently Asked Questions shows that you know your audience, proves others have already asked this question (so you've already made sales... it's a trust thing), and saves you some time on the customer service end.
You can, of course, write all kinds of content that centers around your Frequently Asked Questions, but having them as blog posts that live on your website can help keep traffic on the site and also help with your overall SEO score. But this Quest is a two-parter and also has you promote your blog post in two other channels. Blog posts often collect dust if you don't tell people about them!