# Become a Highlighter (8)

- [How does Highlight work?](https://help.app.letshighlight.com/support/solutions/articles/73000589519-how-does-highlight-work-)
- [How do I sign up to be a Highlighter?](https://help.app.letshighlight.com/support/solutions/articles/73000669766-how-do-i-sign-up-to-be-a-highlighter-)
- [How do I refer friends or family members?](https://help.app.letshighlight.com/support/solutions/articles/73000669767-how-do-i-refer-friends-or-family-members-)
- [Do I need a Gmail address to join?](https://help.app.letshighlight.com/support/solutions/articles/73000669768-do-i-need-a-gmail-address-to-join-)
- [Can you ship to PO Boxes?](https://help.app.letshighlight.com/support/solutions/articles/73000669769-can-you-ship-to-po-boxes-)
- [I live in Alaska or Hawaii. Can I join?](https://help.app.letshighlight.com/support/solutions/articles/73000669770-i-live-in-alaska-or-hawaii-can-i-join-)
- [I haven't been invited to the community](https://help.app.letshighlight.com/support/solutions/articles/73000515459-i-haven-t-been-invited-to-the-community)
- [My invite link does not work](https://help.app.letshighlight.com/support/solutions/articles/73000517767-my-invite-link-does-not-work)