As promised, here are some more things successful indie authors do which I stole from: http://insights.bookbub.com/book-marketing-ideas/
Almost everything on the list is gold–these are the things (between the lists) that I either think are most important or need most to implement in my own life.
Here are the next top 5 (and incidentally, regarding the first one, this blog was written at least 1 week ago):
Pre-schedule social media content. Doing social media marketing doesn’t mean spending all day online. Use tools like Buffer, TweetDeck, or Hootsuite to schedule your day’s or week’s social media content in advance. This will free up your time for writing and other marketing efforts.
Run a fan art contest. Get fans to upload their designs of one of your characters or a scene from your book on your blog or Facebook page — or have them share it using a hashtag on Instagram or Twitter. Choose a winner to receive a prize (and then get permission to use that fan art in your marketing).
Run a participation contest on Facebook. Have fans share your post, comment on a post, or like a post for a chance to win a free signed copy of your book or a gift card, and cross-promote the contest on Twitter, Instagram, and any other social channel where you have a presence.
Make each social media post visual. Tweets with images get 150% more retweets, and Facebook posts with images account for 87% of total interactions. Instead of text-only updates, include an image photo of the book’s cover or a teaser quote. This will encourage fans to click, share, or like. Tools and image libraries like Canva, Shutterstock, and iStockphoto can help.
Partner with other authors to run themed promotions. For example, if your publishing imprint or group of friends has three fantasy books featuring fae, coordinate price promotions, themed blog posts, and social media parties. Packaging these books promotionally helps each book gain exposure across the other authors’ platforms.