You can subscribe to the different mailing lists here.
First, you need to log in by clicking “Acceder” and login using your mail address (not your DNI, NIE, Passport) and CSIC’s account password.
Then, select the list you want to subcribe to and click “Suscribir”.
An additional form will be displayed. Write your name and click in the button, and then, click in “Suscribirse” to complete this process.
With this, the owners will be notified and after they accept your request, you should recive the emails of that list.