How would a newcomer in the realm of cryptocurrency and finance approach the daunting task of initiating quantum AI trading? It seems like a highly advanced and technical area, yet one that holds immense potential for profits and efficiency gains. Could you provide a step-by-step guide for someone who's just starting out? What are the initial considerations and prerequisites? What resources or tools would be invaluable in this journey? And how do I ensure that my investments are secure and my strategies are optimized for success in this rapidly evolving field?