A Comprehensive User Onboarding Guide

[PatienceBlaise]

Description of the feature request:

A comprehensive user onboarding guide designed to help new users quickly understand and start using the Google Gemini API. This guide should cover all necessary steps from account setup to making the first API call, including detailed explanations, screenshots, and troubleshooting tips.

What problem are you trying to solve with this feature?

The current documentation provides excellent individual pieces of information but lacks a cohesive, step-by-step onboarding experience for new users. Beginners might find it challenging to piece together all necessary steps from scattered documents. A unified onboarding guide would streamline the initial setup process, reduce confusion, and enhance the user experience by providing a clear, structured path from start to finish. I am a new user and I actually had issues connecting the pieces

Any other information you'd like to share?

The onboarding guide should include:

•	Account Setup: Instructions for creating a Google account if the user does not have one.
•	API Key Creation: Step-by-step guide on how to create and manage API keys in the Google AI Studio.
•	Environment Setup: Detailed instructions on setting up the development environment, including installing necessary software and dependencies.
•	First API Call: A simple tutorial on making the first API call, with explanations of each step and expected outcomes.
•	Common Errors and Troubleshooting: A section dedicated to common issues users might encounter during the setup and how to resolve them.
•	Next Steps: Suggestions for further reading and advanced tutorials to continue learning.

Providing this comprehensive onboarding guide will significantly improve the initial user experience, making it easier for new users like me to get started with the Google Gemini API and encouraging more widespread adoption of the platform.