diff --git a/README.md b/README.md
index a4ae322..9d8be8d 100644
--- a/README.md
+++ b/README.md
@@ -123,3 +123,19 @@ To correct in FreeBSD, edit `~/.login_conf` to use UTF-8, for example:
     me:\
             :charset=UTF-8:\
             :lang=en_US.UTF-8:
+
+## Useful sqlite3 queries
+
+- Which students have already done at least one topic?
+
+    sqlite3 students.db "select distinct student_id from studenttopic"
+
+
+- How many topics have done each student?
+
+    sqlite3 students.db "select student_id, count(topic_id) from studenttopic group by student_id"
+
+
+- What questions have more wrong answers?
+
+    sqlite3 students.db "select count(ref), ref from answers where grade<1.0 group by ref order by count(ref) desc"
diff --git a/templates/learn.html b/templates/learn.html
index 8596145..5067f54 100644
--- a/templates/learn.html
+++ b/templates/learn.html
@@ -83,7 +83,7 @@
     <div id="main">
         <div id="body">
             <div class="progress">
-                <div class="progress-bar progress-bar-info" id="topic_progress" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width: 0em;width: 0%"></div>
+                <div class="progress-bar progress-bar-success" id="topic_progress" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width: 0em;width: 0%"></div>
             </div>
 
             <div class="col-md-12">
diff --git a/templates/login.html b/templates/login.html
index c4fc892..6e9501b 100644
--- a/templates/login.html
+++ b/templates/login.html
@@ -9,11 +9,7 @@
     <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
     <link rel="stylesheet" href="/static/css/bootstrap-theme.min.css"> <!-- optional -->
 
-<!-- other -->
-    <!-- <link rel="stylesheet" href="/static/font-awesome/css/font-awesome.min.css"> -->
-    <!-- <link rel="stylesheet" href="/static/css/github.css"> -->
-    <!-- <link rel="stylesheet" href="/static/css/test.css"> -->
-
+<!-- Scripts -->
     <script src="/static/js/jquery.min.js"></script>
     <script src="/static/bootstrap/js/bootstrap.min.js"></script>
   </head>
@@ -44,4 +40,3 @@
     </div> <!-- container -->
   </body>
 </html>
-</body>
--
libgit2 0.21.2