To market your book, you'll need to create a marketing plan and budget. You'll need to determine your target audience, decide which marketing channels to use, and create content that will appeal to your readers. You'll also need to create a plan for how you'll measure the success of your marketing campaign.
There are a number of ways to market your book. You can use social media, email marketing, pay-per-click advertising, and hold events to promote your book. You'll need to experiment to see what works best for you and your book.
If you need help getting started, check out this guide to marketing your book.