How do I use Gemini AI?

Could you please elaborate on how exactly one would utilize the Gemini AI system? Are there specific steps that one needs to follow to get started? Additionally, are there any prerequisites or initial setup requirements that need to be met before using the AI? It would be greatly appreciated if you could provide a step-by-step guide on how to effectively navigate and utilize the Gemini AI for optimal results. Thank you in advance for your assistance.