1. Social Media
Whether it's Facebook, Twitter, Instagram, Google+, Pinterest, or YouTube, practically everyone is engaged in social media. It's where people hang out and a great place to build interest in your book. With an active Facebook following, organic posts and videos can go a long way just by having your fans like and share them to increase their visibility, and they're free. Paid Facebook ads are a relatively cheap way to increase the reach of your message. They allow you to target your ads toward "people who follow you" or "people interested in x, y, or z" which will help you reach your desired audience for less than it would cost for a larger, blanket ad.
2. Industry Recognition
Create buzz and increase your book's exposure by having the industry publicly recognize your book's value via book reviews, blurbs, awards, and the news. Put your book in the hands of readers and news outlets who write reviews. Send review copies to other authors and industry professionals who are willing to write a blurb for you, and submit your manuscript to award competitions. This kind of industry recognition helps you reach a wider audience and increase sales.
3. Book Clubs
If you aren't already in a book club, start one. Start with a book people are already talking about, then suggest yours. You can also offer to participate in book clubs who are reading your book. Start with local groups you know and make yourself available via Skype for Q&A sessions. For example, if you were a trial attorney you could attend local book meetings and schedule lectures at law firms to gain attention for your book.
4. Author Events and Guerilla/Grassroots Marketing
Work with your local bookstores and other shops to stage author events, including readings, signings, and meet-and-greets. Place posters around your local community, participate in online giveaways, and collaborate with local businesses. If you've written a book about fashion, ask local clothing stores if they'd throw a postcard for your book in everyone's bag when they make a sale. Have you written a cookbook? Try collaborating with local kitchen stores, cooking classes, and even restaurants that serve food similar to the food in your book. Pitch the local angle, and make sure whatever you do relates to your book.
5. Blogging
By this point, you have a great author website and may want to consider writing a blog. With a blog, you can write entries that include tantalizing details about your book, follow your publishing journey, and are of interest to your potential audience. If you've written a romance, blog about relationships and/or dating. Reach out to other bloggers and plan a guest-blogging tour. Guest blogging on blogs that have your ideal audience will create impressions of your book in places you might not otherwise reach.
Try it out at least one technique and let us know how it worked for you.
To Your Success,
MG