There are two useful features in the toolbar for this; ‘text’ and ‘pushpins’. ‘Text’ allows you to type directly on your PDF. Great for note-taking and completing worksheets. Click the ‘text’ icon and then click where you’d like to place your annotation. ‘Pushpin’ allows you to insert notes, instructions or helpful hints by leaving a red pushpin icon wherever the annotation is made. Click the ‘pushpin’ icon and then click where you’d like to place your annotation. In both cases you can use the additional options to change font size or color, save, delete, reposition or play back your annotation.