To begin contributing to Sylheti Wikinews, you'll need to create a Wikimedia Incubator account if you don't already have one. Here's how:

1. Visit Wikimedia Incubator: Go to the Wikimedia Incubator website (https://incubator.wikimedia.org/wiki/Special:CreateAccount) using your web browser.

2. Click on "Create Account": Look for the "Create account" link at the top right corner of the page and click on it.

3. Fill in Details: You'll be prompted to fill in a username, password, and an email address. Make sure your username adheres to Wikimedia's username policy.

4. Verify Captcha: Complete any captcha or security check if prompted.

5. Submit: Click the "Create your account" button to finalize your registration.

6. Verify Email (Optional): While not mandatory, verifying your email address can help with account recovery and notifications.