This document provides an overview of location-based services and how to get started with location-based marketing. It discusses the evolution of social media from sharing ideas to sharing locations. Check-ins allow users to broadcast and share their locations with friends on applications like Foursquare. Location-based marketing uses check-in data to target customers according to their real preferences and locations to increase repeat visits, attract new customers, and boost word-of-mouth awareness. The document provides 5 tips for businesses to start with location-based marketing, such as claiming venues, sending timely messages to nearby customers, and automating personalized marketing based on customer check-in data and history.