landing-page: Fill landing page

Add contents to landing page. Add content description and summary of
chapters.

Signed-off-by: Razvan Deaconescu <razvan.deaconescu@upb.ro>

landing-page/README.md

@@ -2,8 +2,29 @@
 slug: /
 ---
 
-# Intro
+# Operating Systems
 
-This is a landing page for your course.
+This is a landing page for the contents of the Operating Systems course.
+Here you will find all the documentation needed for this course.
+It is meant to be used by teachers, trainers, students and hobbyists who want to learn about topics on operating systems, low-level programming, system APIs and application internals.
 
-Here you will add infomation about your course that a student might want to know at first glance.
+The course is structured in chapters, each with their own sections.
+See chapters in the sidebar or in the top-level menu.
+
+The chapters are:
+
+- **Software Stack**: focused on the software stack, from applications down to the operating system
+- **Data**: focused on data and memory management, including issues of security and efficiency
+- **Compute**: focused on thread and process management, including scheduling and synchronization
+- **I/O**: focused on input-output mechanisms, including performance and synchronous / asynchronous operations
+- **Application Interaction**: an overall chapter dealing with different means of application communication and synchronization
+
+Each chapter consists of most types of content presented in the [Open Education Hub Methodology](https://open-education-hub.github.io/methodology/): slides, drills, projects, media, guides.
+Support files and full contents are part of the [corresponding GitHub repository](https://github.com/open-education-hub/operating-systems).
+
+## Licensing and Contributing
+
+The contents are open educational resources ([OER](https://en.wikipedia.org/wiki/Open_educational_resources)), part of the [Open Education Hub project](https://open-education-hub.github.io/);
+they are hosted on [GitHub](https://github.com/open-education-hub/oer-template), licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) and [BSD 3-Clause](https://opensource.org/licenses/BSD-3-Clause).
+
+If you find an issue or want to contribute, follow the [contribution guidelines on GitHub](https://github.com/open-education-hub/oer-template/blob/main/CONTRIBUTING.md).