diff --git a/cps/templates/index.html b/cps/templates/index.html
index 7759e50c..98f01ced 100644
--- a/cps/templates/index.html
+++ b/cps/templates/index.html
@@ -62,12 +62,18 @@
 <div class="discover load-more">
   <h2 class="{{title}}">{{_(title)}}</h2>
     <div class="filterheader hidden-xs hidden-sm">
-      <a data-toggle="tooltip" id="new" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='new')}}"><span class="glyphicon glyphicon-book"></span> <span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order"></span></a>
-      <a id="old" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='old')}}"><span class="glyphicon glyphicon-book"></span> <span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order-alt"></span></a>
-      <a id="asc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='abc')}}"><span class="glyphicon glyphicon-font"></span><span class="glyphicon glyphicon-sort-by-alphabet"></span></a>
-      <a id="desc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='zyx')}}"><span class="glyphicon glyphicon-font"></span><span class="glyphicon glyphicon-sort-by-alphabet-alt"></span></a>
-      <a id="pub_new" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='pubnew')}}"><span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order"></span></a>
-      <a id="pub_old" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='pubold')}}"><span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order-alt"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort ascending according to book date')}}" id="new" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='new')}}"><span class="glyphicon glyphicon-book"></span> <span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort descending according to book date')}}" id="old" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='old')}}"><span class="glyphicon glyphicon-book"></span> <span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order-alt"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort title in alphabetical order')}}" id="asc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='abc')}}"><span class="glyphicon glyphicon-font"></span><span class="glyphicon glyphicon-sort-by-alphabet"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort title in reverse alphabetical order')}}" id="desc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='zyx')}}"><span class="glyphicon glyphicon-font"></span><span class="glyphicon glyphicon-sort-by-alphabet-alt"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort authors in alphabetical order')}}" id="auth_az" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='authaz')}}"><span class="glyphicon glyphicon-user"></span><span class="glyphicon glyphicon-sort-by-alphabet"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort authors in reverse alphabetical order')}}" id="auth_za" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='authza')}}"><span class="glyphicon glyphicon-user"></span><span class="glyphicon glyphicon-sort-by-alphabet-alt"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort publishing date in alphabetical order')}}" id="pub_new" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='pubnew')}}"><span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort descending date in reverse alphabetical order')}}"id="pub_old" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='pubold')}}"><span class="glyphicon glyphicon-calendar"></span><span class="glyphicon glyphicon-sort-by-order-alt"></span></a>
+      {% if page == 'series' %}
+      <a data-toggle="tooltip" title="{{_('Sort ascending according to series index')}}" id="series_asc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='seriesasc')}}"><span class="glyphicon glyphicon-sort-by-order"></span></a>
+      <a data-toggle="tooltip" title="{{_('Sort descending according to series index')}}" id="series_desc" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='seriesdesc')}}"><span class="glyphicon glyphicon-sort-by-order-alt"></span></a>
+      {% endif %}
       <!--div class="btn-group character">
         <a id="no_shelf" class="btn btn-primary" href="{{url_for('web.books_list', data=page, book_id=id, sort_param='pubold')}}"><span class="glyphicon glyphicon-list"></span> <b>{{_('Group by series')}}</b></a>
       </div-->
diff --git a/cps/web.py b/cps/web.py
index 8066eb12..50a2417c 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -631,6 +631,10 @@ def render_books_list(data, sort, book_id, page):
         order = [db.Books.author_sort.asc()]
     if sort == 'authza':
         order = [db.Books.author_sort.desc()]
+    if sort == 'seriesasc':
+        order = [db.Books.series_index.asc()]
+    if sort == 'seriesdesc':
+        order = [db.Books.series_index.desc()]
 
     if data == "rated":
         if current_user.check_visibility(constants.SIDEBAR_BEST_RATED):
@@ -813,7 +817,7 @@ def render_ratings_books(page, book_id, order):
     entries, random, pagination = calibre_db.fill_indexpage(page, 0,
                                                             db.Books,
                                                             db.Books.ratings.any(db.Ratings.id == book_id),
-                                                            [db.Books.timestamp.desc(), order[0]])
+                                                            [order[0]])
     if name and name.rating <= 10:
         return render_title_template('index.html', random=random, pagination=pagination, entries=entries, id=book_id,
                                      title=_(u"Rating: %(rating)s stars", rating=int(name.rating / 2)), page="ratings")
@@ -827,7 +831,7 @@ def render_formats_books(page, book_id, order):
         entries, random, pagination = calibre_db.fill_indexpage(page, 0,
                                                                 db.Books,
                                                                 db.Books.data.any(db.Data.format == book_id.upper()),
-                                                                [db.Books.timestamp.desc(), order[0]])
+                                                                [order[0]])
         return render_title_template('index.html', random=random, pagination=pagination, entries=entries, id=book_id,
                                      title=_(u"File format: %(format)s", format=name.format), page="formats")
     else:
@@ -860,7 +864,7 @@ def render_language_books(page, name, order):
     entries, random, pagination = calibre_db.fill_indexpage(page, 0,
                                                             db.Books,
                                                             db.Books.languages.any(db.Languages.lang_code == name),
-                                                            [db.Books.timestamp.desc(), order[0]])
+                                                            [order[0]])
     return render_title_template('index.html', random=random, entries=entries, pagination=pagination, id=name,
                                  title=_(u"Language: %(name)s", name=lang_name), page="language")