Embarking on our journey, the first task is to collect the initial data sets. This task sets the foundation for the entire workflow. Would you like to know why it's crucial? Because having comprehensive, robust data sets from all relevant sources can make or break our process. To achieve this, we need skilled extraction techniques and access to the right databases and software tools. Challenges could include incomplete data or access issues, but don't worry—we'll resolve these with backup methods and consultations with data custodians. Ready to start?