diff --git a/src/build.py b/src/build.py
index 176bc6b..f5aa932 100644
--- a/src/build.py
+++ b/src/build.py
@@ -107,12 +107,13 @@ class Build:
         shutil.copyfile(src, dst)
 
     # cached
-    def __build_chapter(self, edition, number, chapter, next_chapter=None):
+    def __build_chapter(self, edition, edition_name, number, chapter, next_chapter=None):
         chapter_template = self.env.get_template("chapter.html")
         next_chapter_template = self.env.get_template("next_chapter.html")
         with open(f'build/{edition}_chapter_{chapter["ident"]}.html', 'w') as file:
             result = chapter_template.render(
                 edition=edition,
+                name=edition_name,
                 number=number,
                 chapter=chapter,
             )
@@ -128,7 +129,7 @@ class Build:
             file.write(result)
 
     # cached
-    def __build_section(self, edition, section, chapter, next_section=None, next_chapter=None):
+    def __build_section(self, edition, edition_name, section, chapter, next_section=None, next_chapter=None):
         section_template = self.env.get_template("section.html")
         next_section_template = self.env.get_template("next_section.html")
         next_chapter_template = self.env.get_template("next_chapter.html")
@@ -139,6 +140,7 @@ class Build:
 
                 result = section_template.render(
                     edition=edition,
+                    name=edition_name,
                     section=section,
                     chapter=chapter,
                 )
@@ -158,19 +160,31 @@ class Build:
                 result = BeautifulSoup(result, "html.parser").prettify()
                 file.write(result)
 
+    def __build_book_index(self, book):
+        template = self.env.get_template("course_index.html")
+        with open(f"build/{book['edition']}_course_index.html", "w") as file:
+            result = template.render(
+                book=book,
+            )
+            result = self.__build_page(result)
+            result = BeautifulSoup(result, "html.parser").prettify()
+            file.write(result) 
+
     def build_edition(self, edition):
         edition = edition.upper()
 
         with open(f'data/book_{edition}.json') as f:
             book = json.load(f)
-
-            for number, chapter in enumerate(tqdm(book, desc=f"Build Edition: {edition}"),1):
-                next_chapter = book[number] if number < len(book) else None
-                self.__build_chapter(edition, number, chapter, next_chapter)
+            chapters = book["chapters"]
+            edition_name = book["title"]
+            self.__build_book_index(book)
+            for number, chapter in enumerate(tqdm(chapters, desc=f"Build Edition: {edition}"),1):
+                next_chapter = chapters[number] if number < len(chapters) else None
+                self.__build_chapter(edition, edition_name, number, chapter, next_chapter)
 
                 for i, section in enumerate(chapter["sections"],1) :
                     next_section = chapter["sections"][i] if i < len(chapter["sections"]) else None
-                    self.__build_section(edition, section, chapter, next_section, next_chapter)
+                    self.__build_section(edition, edition_name, section, chapter, next_section, next_chapter)
 
     def build_assets(self):
         shutil.copytree("assets", "build/assets", dirs_exist_ok=True)
\ No newline at end of file
diff --git a/src/download.py b/src/download.py
index 39aaa11..72f37b4 100644
--- a/src/download.py
+++ b/src/download.py
@@ -47,13 +47,20 @@ class Download:
                         "class": in_section["class"],
                         "content": in_section["content"],
                         "slide": in_section["slide"],
-                        "video": in_section["video_url"],
+                        "video_url": in_section["video_url"],
                         "questions": [],
                     }
                 )
 
+            out_edition = {
+                "title": in_edition["title"],
+                "abstract": in_edition["abstract"],
+                "chapters": out_chapters,
+                "edition": edition,
+            }
+
             with open("data/book_" + edition + ".json", "w", encoding="utf-8") as file:
-                json.dump(out_chapters, file, ensure_ascii=False, indent=4)
+                json.dump(out_edition, file, ensure_ascii=False, indent=4)
 
     def download_question_metadata(self):
         questions = self.api.get(
diff --git a/templates/html/chapter.html b/templates/html/chapter.html
index 4cb0218..969f08f 100644
--- a/templates/html/chapter.html
+++ b/templates/html/chapter.html
@@ -1,6 +1,6 @@
 <div style="float: right;">
   <div class="btn-group" role="group">
-    {% if chapter.video_url %}
+    {% if chapter["video_url"] %}
       <a class="btn btn-secondary" href="{{ chapter["video_url"] }}" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" height="24px" viewBox="0 0 24 24" width="24px" fill="#000000"><path d="M0 0h24v24H0V0z" fill="none"></path><path d="M21 3H3c-1.11 0-2 .89-2 2v12c0 1.1.89 2 2 2h5v2h8v-2h5c1.1 0 1.99-.9 1.99-2L23 5c0-1.11-.9-2-2-2zm0 14H3V5h18v12zm-5-6l-7 4V7z"></path></svg></a>
     {% endif %}
     <a class="btn btn-secondary" href="{{ edition }}_slide_{{ chapter["ident"] }}.html"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M840-120v-640H120v320H40v-320q0-33 23.5-56.5T120-840h720q33 0 56.5 23.5T920-760v560q0 33-23.5 56.5T840-120ZM360-400q-66 0-113-47t-47-113q0-66 47-113t113-47q66 0 113 47t47 113q0 66-47 113t-113 47Zm0-80q33 0 56.5-23.5T440-560q0-33-23.5-56.5T360-640q-33 0-56.5 23.5T280-560q0 33 23.5 56.5T360-480ZM40-80v-112q0-34 17.5-62.5T104-298q62-31 126-46.5T360-360q66 0 130 15.5T616-298q29 15 46.5 43.5T680-192v112H40Zm80-80h480v-32q0-11-5.5-20T580-226q-54-27-109-40.5T360-280q-56 0-111 13.5T140-226q-9 5-14.5 14t-5.5 20v32Zm240-400Zm0 400Z"/></svg></a>
@@ -10,7 +10,7 @@
 <nav aria-label="breadcrumb">
   <ol class="breadcrumb">
     <li class="breadcrumb-item"><a href="index.html">Home</a></li>
-    <li class="breadcrumb-item"><a href="{{ edition }}_course_index.html">Online-Kurs</a></li>
+    <li class="breadcrumb-item"><a href="{{ edition }}_course_index.html">{{ name }}</a></li>
     <li class="breadcrumb-item active" aria-current="page">{{ chapter["title"] }}</li>
   </ol>
 </nav>
diff --git a/templates/html/course_index.html b/templates/html/course_index.html
new file mode 100644
index 0000000..ed72850
--- /dev/null
+++ b/templates/html/course_index.html
@@ -0,0 +1,9 @@
+<h1>{{ book["title"] }}</h1>
+<p>{{ book["abstract"] }}</p>
+<div class="chapter-toc d-grid gap-2">
+    {% for chapter in book["chapters"] %}
+        <a class="btn btn-outline-primary btn-labeled" href="{{ book["edition"] }}_chapter_{{ chapter["ident"] }}.html">
+            <span class="btn-label">{{loop.index}}</span>{{ chapter["title"]}}
+        </a>
+    {% endfor %}
+</div>
\ No newline at end of file
diff --git a/templates/html/section.html b/templates/html/section.html
index 63db3e0..82d0504 100644
--- a/templates/html/section.html
+++ b/templates/html/section.html
@@ -1,6 +1,6 @@
 <div style="float: right;">
   <div class="btn-group" role="group">
-    {% if section.video_url %}
+    {% if section["video_url"] %}
       <a class="btn btn-secondary" href="{{ section["video_url"] }}" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" height="24px" viewBox="0 0 24 24" width="24px" fill="#000000"><path d="M0 0h24v24H0V0z" fill="none"></path><path d="M21 3H3c-1.11 0-2 .89-2 2v12c0 1.1.89 2 2 2h5v2h8v-2h5c1.1 0 1.99-.9 1.99-2L23 5c0-1.11-.9-2-2-2zm0 14H3V5h18v12zm-5-6l-7 4V7z"></path></svg></a>
     {% endif %}
     <a class="btn btn-secondary" href="{{ edition }}_slide_{{ chapter["ident"] }}.html#{{ section_id }}"><svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M840-120v-640H120v320H40v-320q0-33 23.5-56.5T120-840h720q33 0 56.5 23.5T920-760v560q0 33-23.5 56.5T840-120ZM360-400q-66 0-113-47t-47-113q0-66 47-113t113-47q66 0 113 47t47 113q0 66-47 113t-113 47Zm0-80q33 0 56.5-23.5T440-560q0-33-23.5-56.5T360-640q-33 0-56.5 23.5T280-560q0 33 23.5 56.5T360-480ZM40-80v-112q0-34 17.5-62.5T104-298q62-31 126-46.5T360-360q66 0 130 15.5T616-298q29 15 46.5 43.5T680-192v112H40Zm80-80h480v-32q0-11-5.5-20T580-226q-54-27-109-40.5T360-280q-56 0-111 13.5T140-226q-9 5-14.5 14t-5.5 20v32Zm240-400Zm0 400Z"/></svg></a>
@@ -10,13 +10,13 @@
 <nav aria-label="breadcrumb">
   <ol class="breadcrumb">
     <li class="breadcrumb-item"><a href="index.html">Home</a></li>
-    <li class="breadcrumb-item"><a href="{{ edition }}_course_index.html">Online-Kurs</a></li>
+    <li class="breadcrumb-item"><a href="{{ edition }}_course_index.html">{{ name }}</a></li>
     <li class="breadcrumb-item"><a href="{{ edition }}_chapter_{{ chapter["ident"] }}.html">{{ chapter["title"] }}</a></li>
     <li class="breadcrumb-item active" aria-current="page">{{ section["title"] }}</li>
   </ol>
 </nav>
 
-<h1>{{ section["title"] }} (Klasse {{ section["class"] }})</h1>
+<h1>{{ section["title"] }}</h1>
 
 <a id="margin_0"></a>
 {{ section["content"] }}
\ No newline at end of file