1. Visit https://elsi.cpqrr.fiocruz.br/en/home-english/en-data-access/. Scroll down to the bottom of the page and click on the "Registration" link.

2. Fill out the registration form with your information, check the two boxes, and click on the "Register" button.

3. Once your registration has been approved by the administrator, you will receive an email containing the data download link.

4. After logging in to your account, you will be able to download the data that you are interested in.

*Please note that the exact steps and interface may vary slightly, but this guide should provide a general overview of the process to access ELSI data.