You can add a resume template in Google Docs by first uploading it to Drive. Your resume will need to be in .docx, .doc or .odt format in order to open it with Google Docs.
You can also find free Google Docs resumes from Career Reload. Start by selecting a template, click the download link and follow the instructions to Make a Copy it to your Drive. Be sure that you are logged in to your Google Drive or the ‘Make a Copy’ option won’t be available.