How do I download data from Synapse?

Could you please explain the process of downloading data from Synapse in a step-by-step manner? I'm a bit unsure of the exact procedure and would appreciate it if you could guide me through it. Are there any specific requirements or permissions that I need to fulfill before I can access and download the data? Additionally, are there any best practices or tips that you could share to ensure a smooth and efficient data download process? Thank you in advance for your assistance.