Underneath the journal description and entry box you'll see a list of all the journal entries for any journal topic you and your fellow course members have written on. You can filter these to show only certain topics if you want, and also sort them in different ways. Just use the Sort and Filter drop downs on the right hand side of the screen.
You can view your coach and other course members' comments, if there are any, underneath each entry. You can also comment on any course member's journal entry if you want by clicking the Comment link (this link will not appear if they have disabled comments).