How to edit the sidebar
After login into Dashboard, go to Appearance ->Widgets -> Click on ‘Primary Sidebar’ and from the dropdown -> Edit the existing widgets by clicking on them. Edit them or Delete them. After editing click on ‘Done’ to save them. You can add more widgets from the ‘Available Widgets’ block located in the left panel to the ‘Primary Sidebar’ section.
To edit the existing widgets click on each widget item to expand them and then you can edit the widget contents there. You can also delete that widget from there.