How to buy lithium?

How does one effectively go about purchasing lithium? Is there a specific process or platform that should be utilized? What factors should be considered when making a purchase, such as price fluctuations and availability? Additionally, are there any potential risks or precautions that need to be taken into account when investing in lithium? Understanding the intricacies of this process is crucial for those looking to buy lithium, so I would appreciate a detailed and comprehensive explanation.