In this document, you'll learn how to sign in to Perplexity.ai quickly and easily. First, visit the Perplexity.ai website. Click the "Sign In" button located at the bottom left corner of the homepage. Enter your email address, then click "Continue with Email." If you haven't created an account yet, choose the "Sign Up" option and follow the prompts to register. Once signed in, you'll gain access to Perplexity.ai's powerful AI-driven tools and features.