How can I setup my website language options?

STEP 1:  Go to Setup > Home > LANGUAGES.

STEP 2:  Here the property will find the Default Language of the website, and below, a list of other languages available.

STEP 3:  Add the languages you wish and click  on the  button.

STEP 4:  Do not forget to publish your changes, under WEBSITE tab, by clicking on , so that all this information becomes available at your website.

Note:  To help you translate your website, please check the following e-card: How can I translate my website to other languages?