I recommend trying the Data Engineer Associate Free Mock Test, if you havn’t already. It can be a helpful practice exercise. Additionally, Databricks offers a free video course specifically designed for the professional certification. You should definitely go through it. You can find the course here. Once you complete this course, congratulations! You will be halfway through your preparation journey. At this point, you just need to cover the remaining topics listed below and you will be ready to attempt your first mock test.