1. Introduction

2. Data Processing for Gaia DR2

3. Overview of the Contents of Gaia DR2

4. Scientific Performance and Potential of Gaia DR2

5. Treat Gaia DR2 as Independent from Gaia DR1

6. Using Gaia DR2 Data: Completeness and Limitations

7. Using Gaia DR2 Data: Additional Guidance

8. Gaia DR2 Access Facilities

9. Conclusions