         else if subs == 0
             # have a payment source, but no subscriptions
             <span>
-                Click "Add Subscription or Course Package...".   If you are teaching a course, choose one of the course packages.
-                    If you need to upgrade your projects, choosing a recurring subscription.
+                Click "Add Subscription or Course Package...".
+                If you are{' '}
+                <a
+                  href={"https://doc.cocalc.com/teaching-instructors.html"}
+                  target={"_blank"}
+                  rel={"noopener"}
+                >teaching a course</a>, choose one of the course packages.
+                If you need to upgrade your personal projects, choose a recurring subscription.
                 You will be charged only after you select a specific subscription and click
                 "Add Subscription or Course Package".
                 {help}

            if subs == 0
                # no payment sources yet; no subscriptions either: a new user (probably)
                <span>
                    If you are teaching a course, choose one of the course packages.
                    If you need to upgrade your projects, choosing a recurring subscription.
                    You will <b>not be charged</b> until you explicitly click
                    "Add Subscription or Course Package".
                    {help}

            <span>
                You may sign up for the same subscription package more than
                once to increase the number of upgrades that you can use.
                Past invoices and receipts are available below.
                {help}
            </span>

