Google Docs can make a table of contents for you based on text in the headings format, you just need to know how to do it before or after adding headings.

You can create a table of contents in Microsoft Word where every chapter title links to the appropriate chapter. Then you can keep these links live when you convert the document to a PDF.

If you're looking to better organize your Google Doc, you should consider adding a table of contents. Here's how to do it.