diff --git a/physionet-django/training/views.py b/physionet-django/training/views.py
index 6ed60a575..3e75fea54 100644
--- a/physionet-django/training/views.py
+++ b/physionet-django/training/views.py
@@ -49,14 +49,15 @@ def get_course_and_module_progress(user, course, module_order):
         slug = get_random_string(20)
         while Training.objects.filter(slug=slug).exists():
             slug = get_random_string(20)
-        training = Training()
-        training.slug = slug
-        training.training_type = course.training_type
-        training.user = user
-        training.course = course
-        training.process_datetime = timezone.now()
-        training.status = TrainingStatus.REVIEW
-        training.save()
+        training = Training.objects.create(
+            slug=slug,
+            training_type=course.training_type,
+            user=user,
+            course=course,
+            process_datetime=timezone.now(),
+            status=TrainingStatus.REVIEW
+        )
+
 
     module = get_object_or_404(course.modules, order=module_order)
     module_progress, _ = ModuleProgress.objects.get_or_create(course_progress=course_progress, module=module)
diff --git a/physionet-django/user/managers.py b/physionet-django/user/managers.py
index 46b1ecd68..f86c4a682 100644
--- a/physionet-django/user/managers.py
+++ b/physionet-django/user/managers.py
@@ -7,21 +7,28 @@
 
 class TrainingQuerySet(QuerySet):
     def get_review(self):
+        """
+        Get the document-based or URL-based training objects for the user, that are in the status REVIEW.
+        """
         return self.filter(
             Q(status=TrainingStatus.REVIEW),
             Q(training_type__required_field=RequiredField.DOCUMENT)
             | Q(training_type__required_field=RequiredField.URL)
         )
 
-    # adding a query to fetch the on-platform courses that are in the status REVIEW.
     def in_progress(self):
+        """
+        Get the on-platform training objects for the user, that are in the status REVIEW.
+        """
         return self.filter(
             Q(status=TrainingStatus.REVIEW),
             Q(training_type__required_field=RequiredField.PLATFORM)
         )
 
     def get_valid(self):
-
+        """
+        Get all the training objects that are in the status ACCEPTED and have not expired.
+        """
         return self.filter(
             Q(status=TrainingStatus.ACCEPTED),
             Q(training_type__valid_duration__isnull=True)
@@ -39,7 +46,9 @@ def get_valid(self):
         )
 
     def get_expired(self):
-
+        """
+        Get all the training objects that are in the status ACCEPTED and have expired
+        """
         return self.filter(
             Q(status=TrainingStatus.ACCEPTED),
             Q(process_datetime__lt=timezone.now() - Case(
@@ -56,4 +65,7 @@ def get_expired(self):
         )
 
     def get_rejected(self):
+        """
+        Get all the training objects that are in the status REJECTED.
+        """
         return self.filter(status=TrainingStatus.REJECTED)