Start a collection in AdLens: Collect all on the Collection page, or Collect on a school's page.
No collection yet.
After replacing the extension's folder with a new download, click Reload extension.
No login is needed. If a site keeps showing its sign-in page, the extension stops and asks you to log in to it. It never logs in itself or stores passwords; when a captcha shows up, it waits for you to solve it.