Claude Tutorial: Complete Guide to Registration, Login, and Account Management

Claude is a popular AI assistant tool, and many new users find the registration, login, and account switching process a bit confusing at first. This Claude tutorial will walk you through every basic step so you can start using this powerful conversational tool with confidence.

Claude Registration: Preparation and Process

Before registering for Claude, you'll need a working email address. We recommend using international email services like Gmail or Outlook. Currently, Claude supports direct sign-in with a Google account, or you can register using a phone number for verification—just make sure your number can receive international SMS. Go to the Claude website, click "Sign Up," follow the prompts to enter your email or authorize your Google account, then check your inbox for the verification email to activate your account. The whole process takes about three minutes.

If you don't receive the verification email, check your spam folder or try a different email address. Claude may experience delays with some domestic email servers in China, so using Gmail is generally more reliable.

Claude Login: Multiple Methods and Common Issues

Once registered, logging into Claude is simple. On the official website, click "Log In," enter your email and password, or use your Google account to sign in directly. If you're using Claude for Enterprise, you may need a dedicated link and invitation code from your administrator. If you see an "Invalid credentials" error, double-check your password—click "Forgot password" to reset it.

Sometimes Claude triggers a security verification due to unusual IP activity, such as repeated login failures or access from uncommon regions. In that case, you'll be asked to enter a code sent to your email, or your account may be temporarily locked for a few minutes. To avoid this, keep your network stable and avoid switching VPN nodes frequently while logging in.

Claude Account Switching: Tips for Managing Multiple Accounts

Many users have both a free and a paid Claude account, or multiple accounts for different purposes. Claude itself doesn't support being logged into multiple accounts simultaneously in the same browser, but you can use browser profiles or multi-user features to switch quickly. For example, in Chrome, create a new user profile and assign different accounts to different profiles—just click your avatar to switch.

If you only need to use a second account temporarily, simply log out of the current account and log in again. Note that Claude remembers the device information from your last session, so after switching accounts, it's a good idea to clear your browser's cache and cookies to avoid account confusion. I personally recommend using an incognito window for the second account—it's the simplest approach.

Claude Account Linking and Information Updates

You can change the email or phone number tied to your account after registration. In your Claude account settings, find "Account Info" to modify your email or add a backup contact. If you upgrade to Claude Pro, consider using a virtual credit card or PayPal when linking a payment method—this makes billing easier to manage. Currently, Claude does not support common Chinese payment methods like Alipay or WeChat Pay, so be sure to have an international payment tool ready.

Linking a phone number to your account is mainly for enabling two-factor authentication (2FA) to enhance security. After enabling 2FA in your settings, you'll need to enter a code sent to your phone each time you log in. Although it adds an extra step, it helps prevent unauthorized access. If you change your phone number, remember to unbind the old number from your account first; otherwise, you won't be able to receive verification codes on the new number, which can be troublesome.