Shore lets you create both services and courses. You can create and manage both under "Services" (Main menu > Manage your company > Services). Here's the difference:
Services can be booked at any time within the established booking hours.
A haircut would be a service because your customers can book it at any time within your established booking hours.
Courses take place on one or more specific dates specified by you, and they have a maximum number of participants. Courses can only be booked on these specific dates, and only until the maximum number of participants has been reached.
A workshop or a yoga class would be courses.