Could you elaborate on the steps involved in investing in the PureFi protocol? As a potential investor, I'm interested in understanding the process from start to finish. What are the key considerations I should take into account before making a decision? What are the risks associated with investing in PureFi, and how can I mitigate them? Additionally, what are the potential returns I could expect, and how do they compare to other investment opportunities? I'd appreciate a comprehensive guide that covers all the necessary information to make an informed decision.