For your self-paced course Beyond Backpacks: A Guide to Healthy Travel, note these two links:

Your SINGLE-USE enrollment link: https://proton.oli.cmu.edu/sections/join/uk9ou
Click CREATE AN ACCOUNT if you don’t have one. Otherwise you can sign in to an existing account.

Bookmark this URL to sign in later:

https://proton.oli.cmu.edu/

NOTE: Make sure you remember your account information. You can either create an email/password account, or you can “sign in with Google.” Don’t use both, though!