Yes, with self-publishing, you retain all rights to your book, and you can make decisions about its distribution, pricing, and future adaptations. You do not need an LLC for self-publishing a book. You might choose to create an LLC somewhere down the road of your writing career, but it's not a necessity to publish. Often, writers find that what they might gain from having an LLC isn't exactly worth the cost. However, you will want to make sure that you copyright your book.