This document provides guidance on effectively managing test data for software testing. It discusses 6 approaches to preparing test data: 1) using the user interface, 2) inserting data via API calls, 3) direct SQL insertion into the database, 4) using data sets with DBUnit, 5) versioned data dumps, and 6) reusing production data. The key recommendations are to choose the approach that best fits the system under test, speed up test data management with APIs, reuse live data when possible, and mix strategies as needed to build reliable test cases.