The document provides guidance on selling internationally by outlining 5 critical elements for international expansion: 1) Identifying target markets through market research; 2) Considering payment options that are convenient for customers in target markets; 3) Researching taxes, duties, customs, and regulations that apply to target markets; 4) Developing clear delivery and return policies; and 5) Planning for future growth in international markets. It emphasizes doing research on target markets, offering convenient local payment options, understanding legal obligations, and providing strong customer support through clear policies.