Glenn Gutmacher provides an overview of best practices for sourcing strategies, processes, and tools. He recommends having a robust onboarding plan for new sourcers that is broken down by day and reviewed with each sourcer. Training materials should be reviewed for clarity and consistency. Sourcers should be assigned mentors for different topic areas and encouraged to ask questions. Metrics for tracking success should start earlier in the process, such as number of call attempts and emails sent, rather than just focusing on later stages like submissions and offers. Automating repetitive tasks can increase efficiency.