You can enroll customers directly into your online courses just by entering their email address. They'll receive an email that they're now enrolled.
Step 1: Go to Products
Step 2: Enroll the customer
Click on the three dots to pull up a menu with various options:
Click on "Enroll customer".
A window will pop up asking for their email address:
Type in their email address and click "Yes, enroll this customer" to give this person free access to your online course.
Note: this will override any start date or drip email settings.
Your customer will get an email that looks like this:
All they'll have to do is click the link to set a password. If they already have an account with you, they'll receive a welcome email instead with a link to login.