One easy (and free) way to help us is to rate or review our books. 5-star ratings and reviews push up our books on search engines and give us more exposure, ultimately putting these books in more people's hands.
If you have an Amazon or Goodreads account, logging in and giving us a 5-star rating and/or a few kind words can go a long way:
A note about reviewing on Amazon:
You can review us on Amazon even if you didn't buy the book on Amazon, as long as you:
1) Have bought $50 worth on Amazon in the past year.
2) Log into the Amazon site you normally purchase on — e.g. amazon.com if you're in the US, amazon.co.uk if you're in the UK, etc.