Update README.md

Author: ngvuthdanhh

README.md

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-# certificate-intro-to-kali-linux-basics-simplilearn
+# 🐉 Introduction to Kali Linux Basics – Simplilearn
+
+![Course](https://img.shields.io/badge/Simplilearn-Kali%20Linux%20Basics-darkblue?style=flat-square&logo=linux)
+![Status](https://img.shields.io/badge/Status-Completed-brightgreen?style=flat-square&logo=verizon)
+![Type](https://img.shields.io/badge/Type-Learning%20Project-orange?style=flat-square&logo=notion)
+![Focus](https://img.shields.io/badge/Focus-Kali%20Linux%20Basics-informational?style=flat-square&logo=github)
+![Maintainer](https://img.shields.io/badge/Maintainer-Thành%20Danh-blueviolet?style=flat-square&logo=github)
+
+This repository contains **notes, labs, cheatsheets, tutorials, extras, and a certificate of completion** for the  
+*Introduction to Kali Linux Basics* course by **Simplilearn**.  
+The program introduces learners to **Kali Linux installation, basic commands, security tools, and hands-on labs** for practical cybersecurity skills.
+
+---
+
+## 📚 Notes
+- 📄 [01-introduction.md](./notes/01-introduction.md) – Course introduction  
+- 📄 [02-kali-installation.md](./notes/02-kali-installation.md) – Installing Kali Linux  
+- 📄 [03-basic-commands.md](./notes/03-basic-commands.md) – Command line basics  
+- 📄 [04-file-system.md](./notes/04-file-system.md) – File system navigation  
+- 📄 [05-users-permissions.md](./notes/05-users-permissions.md) – Users, groups, and permissions  
+
+---
+
+## 📋 Cheatsheets
+- 📘 [basic-commands.md](./cheatsheets/basic-commands.md) – Command line quick reference  
+- 📘 [networking-basics.md](./cheatsheets/networking-basics.md) – Networking commands & tips  
+- 📘 [security-tools.md](./cheatsheets/security-tools.md) – Key security tools cheat sheet  
+
+---
+
+## 🛠 Tutorials
+- 📄 [basic-network-scanning.md](./tutorials/basic-network-scanning.md) – Simple Nmap scan tutorial  
+- 📄 [installing-kali-tools.md](./tutorials/installing-kali-tools.md) – Installing extra security tools  
+- 📄 [setting-up-lab-environment.md](./tutorials/setting-up-lab-environment.md) – Preparing virtual lab environment  
+
+---
+
+## 🔬 Extras
+- 📑 [case-studies.md](./extras/case-studies.md) – Real-world Kali Linux applications  
+- 📑 [resources.md](./extras/resources.md) – Additional learning materials  
+- 📆 [timeline.md](./extras/timeline.md) – Course timeline & study plan  
+
+---
+
+## 📖 Docs
+- 📘 [index.md](./docs/index.md) – Program overview  
+- 📘 [glossary.md](./docs/glossary.md) – Glossary of terms  
+- 📘 [references.md](./docs/references.md) – External references  
+- 📘 [roadmap.md](./docs/roadmap.md) – Learning roadmap  
+- 📘 [syllabus.md](./docs/syllabus.md) – Course syllabus  
+
+---
+
+## 📸 Screenshots
+
+| Step | Screenshot |
+|------|------------|
+| 🏫 Introduction | ![](./screenshots/introduction.png) |
+
+---
+
+## 📜 Certificate
+🎓 [Certificate of Completion – Introduction to Kali Linux Basics](./cert/8779947_91613071755093241305.pdf)  
+
+---
+
+## 📝 Personal Review
+This course provides a **solid foundation in Kali Linux basics**,  
+from **installation and command line usage** to **essential security tools and hands-on labs**.  
+The combination of **tutorials, notes, and practical exercises** helps learners develop both **theoretical knowledge** and **practical cybersecurity skills**.
+
+---
+
+## ✍️ Author
+**Thành Danh** – Red Team Learner & Security Researcher  
+
+- GitHub: [@ngvuthdanhh](https://github.com/ngvuthdanhh)  
+- Email: ngvu.thdanh@gmail.com  
+
+---
+
+## 📄 License
+This project is licensed under the terms of the **MIT License**. See [LICENSE](./LICENSE) for full details.  
+© 2025 ngvuthdanhh. All rights reserved.