diff --git a/_layouts/post.html b/_layouts/post.html
new file mode 100644
index 0000000..a97ffd7
--- /dev/null
+++ b/_layouts/post.html
@@ -0,0 +1,7 @@
+---
+layout: default
+---
+
+<a href="/journal">Back</a>
+
+{{ content }}
diff --git a/_posts/2025-07-18-hello-world.md b/_posts/2025-07-18-hello-world.md
new file mode 100644
index 0000000..8bfebe4
--- /dev/null
+++ b/_posts/2025-07-18-hello-world.md
@@ -0,0 +1,9 @@
+---
+title: "Hello World"
+layout: post
+---
+# Welcome
+
+**Hello world**, this is my first Jekyll blog post.
+
+I hope you like it!
diff --git a/journal.html b/journal.html
new file mode 100644
index 0000000..7dfe7d8
--- /dev/null
+++ b/journal.html
@@ -0,0 +1,19 @@
+---
+title: "Journal"
+layout: default
+---
+
+<h1>Journal</h1>
+
+{% assign posts_by_month = site.posts | group_by_exp: "post", "post.date | date: '%B %Y'" %}
+{% for month in posts_by_month %}
+  <h2>{{ month.name }}</h2>
+  <ul>
+    {% for post in month.items %}
+      <li>
+        <time>{{ post.date | date: "%Y.%m.%d" }}</time>
+        <a href="{{ post.url }}">{{ post.title }}</a>
+      </li>
+    {% endfor %}
+  </ul>
+{% endfor %}