How to Open Sidebar.PHP in WordPress

1. Type the URL of your website in your browser's address bar, adding '/wp-admin' to the end to display the login screen. Type the user name 'admin' and your WordPress password to continue to the Dashboard.
2. Open the 'Appearance' section on the left side of the menu, and select 'Editor.'

3. Click the drop-down menu next to 'Select theme to edit' in the upper-right corner of the page, then click the WordPress theme that you want to edit the file 'sidebar.php' for. By default, this menu displays the theme that is currently active on your website. Click the 'Select' button after making your choice.
4. Scroll down the page, and click the 'Sidebar' link on the right side. This opens the file 'sidebar.php' in the editor at the top of the page.
5. Click the 'Update File' button at the bottom of the page after making the desired changes.