The National Conference of State Legislatures listing links to each state's data breach law. With this listing, you can quickly determine which ones you need to be in compliance with.
The NIST Small Business Corner is dedicated to providing small businesses with cyber security best practices. One the right hand side of the SBC wesbsite are the current NIST publications.
The US Department of Homeland Security has a lot of good computer security tips for both business and at home. As your tax dollars went into developing this info, you should benefit from it.
The US Computer Emergency Readiness Team (CERT) has a wide variety of cyber security advice on their Tips page. And like the Homeland Security tips, your tax dollars funded this.
In 2016, the American Bankers Association put together this non-biased Cyber Insurance buying guide. It has a lot of good information on types of insurance, what is covered, exclusions, etc.