1. [Sign up with Google](http://www.google.com/recaptcha/admin) for an API key pair for your site. (Note that if you want to do testing on your local, you need to authorize your local domain as well as the eventual domain.)
2. Download and enable the [CAPTCHA](https://www.drupal.org/project/captcha) and [ReCAPTCHA](https://www.drupal.org/project/recaptcha) modules
3. Go to /admin/config/people/captcha/recaptcha on your site and fill out the Site key and Secret key.
4. On /admin/config/people/captcha, click the "Add CAPTCHA administration links to forms" box. Note that this doesn't seem to work with Jason's custom search module, so some forms may need to be manually entered.
5. To manually enter a form, you need to know its ID / machine name. To find that out, [inspect the form](https://www.drupal.org/project/botcha/issues/2024539).If you look at the HTML of the webform, you see a lot of <input type="hidden"> elements. One of these looks like this: `<input type="hidden" value="webform_client_form_7" name="form_id">`