+class LyndaBaseIE(InfoExtractor):
+    _LOGIN_URL = 'https://www.lynda.com/login/login.aspx'
+    _SUCCESSFUL_LOGIN_REGEX = r'isLoggedIn: true'
+    _ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
+    _NETRC_MACHINE = 'lynda'
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        (username, password) = self._get_login_info()
+        if username is None:
+            return
+
+        login_form = {
+            'username': username,
+            'password': password,
+            'remember': 'false',
+            'stayPut': 'false'
+        }
+        request = compat_urllib_request.Request(
+            self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
+        login_page = self._download_webpage(
+            request, None, 'Logging in as %s' % username)
+
+        # Not (yet) logged in
+        m = re.search(r'loginResultJson = \'(?P<json>[^\']+)\';', login_page)
+        if m is not None:
+            response = m.group('json')
+            response_json = json.loads(response)
+            state = response_json['state']
+
+            if state == 'notlogged':
+                raise ExtractorError(
+                    'Unable to login, incorrect username and/or password',
+                    expected=True)
+
+            # This is when we get popup:
+            # > You're already logged in to lynda.com on two devices.
+            # > If you log in here, we'll log you out of another device.
+            # So, we need to confirm this.
+            if state == 'conflicted':
+                confirm_form = {
+                    'username': '',
+                    'password': '',
+                    'resolve': 'true',
+                    'remember': 'false',
+                    'stayPut': 'false',
+                }
+                request = compat_urllib_request.Request(
+                    self._LOGIN_URL, compat_urllib_parse.urlencode(confirm_form))
+                login_page = self._download_webpage(
+                    request, None,
+                    'Confirming log in and log out from another device')
+
+        if re.search(self._SUCCESSFUL_LOGIN_REGEX, login_page) is None:
+            raise ExtractorError('Unable to log in')
+
+
+class LyndaIE(LyndaBaseIE):