Networking with other authors is a must, especially with those who write in the same or similar genre. See them as allies, not competition. How many readers stick to books from only one author? However, they do tend toward certain genres. Your fans will appreciate learning about authors who write stories similar to your own.
Beta exchanges, promoting each other on your respective blogs, retweeting, Facebook posts, sharing marketing ideas, etc. are a few ways where you can help each other.