diff --git a/aprendizations/learnapp.py b/aprendizations/learnapp.py
index bef1f10..5afa575 100644
--- a/aprendizations/learnapp.py
+++ b/aprendizations/learnapp.py
@@ -434,19 +434,19 @@ class LearnApp(object):
     # makes factory for a single topic
     # ------------------------------------------------------------------------
     def factory_for(self, tref: str) -> Dict[str, QFactory]:
-        factory: Dict[str, QFactory] = {}
+        factory: Dict[str, QFactory] = dict()
         g = self.deps
         t = g.nodes[tref]  # get node
-
         # load questions as list of dicts
         topicpath: str = path.join(g.graph['prefix'], tref)
         try:
             fullpath: str = path.join(topicpath, t['file'])
         except Exception:
             msg1 = f'Invalid topic "{tref}"'
-            msg2 = f'Check dependencies of {", ".join(g.successors(tref))}'
-            raise LearnException(f'{msg1}. {msg2}')
-
+            msg2 = f'Check dependencies of: {", ".join(g.successors(tref))}'
+            msg = f'{msg1}. {msg2}'
+            logger.error(msg)
+            raise LearnException(msg)
         logger.debug(f'  Loading {fullpath}')
         try:
             questions: List[QDict] = load_yaml(fullpath)
@@ -457,9 +457,9 @@ class LearnApp(object):
                 msg = f'Failed to load "{fullpath}"'
                 logger.error(msg)
                 raise LearnException(msg)
-
         if not isinstance(questions, list):
             msg = f'File "{fullpath}" must be a list of questions'
+            logger.error(msg)
             raise LearnException(msg)
 
         # update refs to include topic as prefix.
diff --git a/aprendizations/templates/maintopics-table.html b/aprendizations/templates/maintopics-table.html
index fad46b5..9a8a86c 100644
--- a/aprendizations/templates/maintopics-table.html
+++ b/aprendizations/templates/maintopics-table.html
@@ -60,7 +60,21 @@
 
   <div id="notifications"></div>
 
-  <h4>{{ course['title'] }}</h4>
+  <div class="alert alert-warning alert-dismissible fade show" role="alert">
+    <p><strong>Legenda:</strong></p>
+    <p class="ml-3">
+    <i class="fas fa-book"></i> - Material de estudo<br>
+    <i class="fas fa-pencil-alt"></i> - Exercícios<br>
+    <i class="fas fa-puzzle-piece"></i> - Tópico que não faz parte dos objectivos deste curso mas que é necessário saber<br>
+    <i class="fas fa-flag"></i> - Milestone, terminou um certo conjunto de tópicos
+    </p>
+
+    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+      <span aria-hidden="true">&times;</span>
+    </button>
+  </div>
+
+  <h4 class="p-4">{{ course['title'] }}</h4>
 
   <table class="table table-hover">
     <thead class="">
@@ -75,21 +89,21 @@
         {% if t['level'] is None %}
           <tr class="table-secondary">
             <td>
-              {% if t['type']=='chapter' %}
-                <div class="text-muted lead">
-                  {{ t['name'] }}
-                </div>
-              {% elif t['type']=='learn' %}
-                <div class="text-muted">
+              <div class="text-muted">
+                {% if t['ref'] not in course['goals'] %}
+                  <i class="fas fa-puzzle-piece"></i>
+                {% end %}
+
+                {% if t['type']=='chapter' %}
+                  <i class="fas fa-flag"></i>
+                {% elif t['type']=='learn' %}
                   <i class="fas fa-book"></i>&nbsp;
-                  {{ t['name'] }}
-                </div>
-              {% else %}
-                <div class="text-muted">
+                {% else %}
                   <i class="fas fa-pencil-alt"></i>&nbsp;
-                  {{ t['name'] }}
-                </div>
-              {% end %}
+                {% end %}
+
+                {{ t['name'] }}
+              </div>
             </td>
             <td class="text-center">
               <i class="fas fa-lock text-muted"></i>
@@ -100,18 +114,19 @@
 
           <tr class="clickable-row " data-href="/topic/{{t['ref']}}">
             <td class="text-primary">
+              {% if t['ref'] not in course['goals'] %}
+                <i class="fas fa-puzzle-piece"></i>
+              {% end %}
+
               {% if t['type']=='chapter' %}
-                <h5>
-                  <i class="fas fa-flag-checkered"></i>&nbsp;
-                  {{ t['name'] }}
-                </h5>
+                <i class="fas fa-flag-checkered"></i>&nbsp;
               {% elif t['type']=='learn' %}
                 <i class="fas fa-book"></i>&nbsp;
-                {{ t['name'] }}
               {% else %}
                 <i class="fas fa-pencil-alt"></i>&nbsp;
-                {{ t['name'] }}
               {% end %}
+
+              {{ t['name'] }}
             </td>
 
             <td class="text-center">
--
libgit2 0.21.2