20 Insider is a fun local newsletter that helps people find the best things happening in Tucson each week. We share: Great restaurants and food spots Fun events and festivals Live music and nightlife Hidden gems around town Local business news Weekend plans and family activities Our goal is to help people stay connected to Tucson and discover new places to eat, shop, and explore. 520 Insider is made for people who love Tucson and want to know what’s going on without spending hours searching online. 520 Insider — Tucson’s Best Kept Secrets, Delivered Weekly.