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 and venues. Location-based marketing uses check-in data to target customers according to their real preferences and locations. The document provides 5 tips for starting a location-based marketing campaign, including claiming venues, sending timely messages to customers when they check in, automating personalized marketing, identifying potential customers, and measuring results to improve marketing efforts over time.