Interpreting Help Center articles or what do those brackets and arrows mean?

Generally, if something is in square brackets it is a button you can click, or a selection from a menu (the sidebar menu, or a dropdown menu). For example [Save] would mean find the save button and click it. The side arrow (>) means to go from one clickable thing to another. For example, [Children] > [Conference Reports] would be directing you to click on "Children" in the sidebar then to click on "Conference Reports" in the top menu. It could be written out in words "First, go to the sidebar and click on "Children". Then find "Conference Reports" along the top menu bar and click on it."