Moz is a great source of SEO information and tools. In addition to provide free education, the company also provides a variety of free and paid for tools.
Moz Pro allows you to take your SEO to the next level. Literally. Their products include keyword research, SEO auditing, backlink research, rank tracking, and a handy SEO toolbar that can be added to Chrome or Firefox.
Moz Local pushes accurate location data to all the major data aggregators and several top-tier online directories, helps you close duplicate business listings, and lets you easily update your business listings. Moz Local also allows you to view rankings, reviews, and traffic data, and see performance for all or a subset of locations with Moz Local Insights.