Landing pages are single web pages designed to get visitors to take a specific action. The document provides tips for creating high-converting landing pages, including keeping text simple, writing compelling headlines, structuring content to show value upfront, showing social proof, using clear calls-to-action, limiting choices, considering the platform, and designing with a purpose. Examples are given of landing pages from companies like Salesforce, Square, Slack, and Unbounce that effectively showcase these strategies.