CS50's lectures are open to the public via Zoom.
Whether you are a CS50x student, a CS50 AP student, a prospective student, a teacher, a parent, or a Harvard alum (or anyone else!), you are cordially invited to attend one or more of Fall 2020's lectures via Zoom. All lectures will also be live-streamed at youtube.com/cs50 and facebook.com/cs50.
All you need to participate is a computer or phone, though you might find it convenient to have both. If using a phone, best to download polleverywhere.com/mobile in advance, but you can alternatively just use a browser to answer questions.