We are trying to update our very old WordPress site that uses many custom templates. I'm in my sidebar.home page and need to update the text of the sidebar, but I see a note at the bottom of the page that says "You need to make this file writable before you can save your changes. See the Codex for more information."
I reviewed the Codex and understand that there are different permissions for different groups etc, but how do I make these changes? Howe do I make this file writeable without changing other pages and permission?
I'm very new at WordPress, and our site does not use many of the plug ins, so I appreciate any help you can provide!