Improve README with specs, links, and contribution guide

README.md

@@ -2,4 +2,49 @@ BeagleBone Black
 ================
 
 [![](OSHW_mark_US000236.png)](https://certification.oshwa.org/us000236.html)
+BeagleBone Black is a low-cost, open-source development board built for developers, educators, and embedded system hobbyists. It's based on AM335x ARM@ Cortex-A8 processor from Texas Instruments.
+
+---
+
+## Key Specifications
+- **processor: ** AM335x 1GHz ARM Cortex-A8
+- **Storage: ** 4GB onboard eMMC + microSD slot
+- **RAM: ** 512MB DDR3
+- **Connectivity: ** USB, HDMI, Ethernet, and GPIO
+- **Operating system: **Runs Linux (Debian-based) out of the box
+- **Expansion: ** 2 x 46-pin header for caps and add-ons
+
+---
+
+## Getting Started
+To start using BeagleBone Black:
+- [Official Getting started Guide](https://beaglebone.org/getting-started)
+- [System Reference Manual (PDF)](./BBB_SRM.pdf)
+- [Flashing a new OS](https://beaglebone.org/getting-started#update)
+
+---
+
+## Resources
+-[Official Site](https://beagleboard.org)
+-[Hardware Wiki](https://elinux.org/Beagleboard:BeagleBoneBlack)
+-[Community Forum](https://forum.beagleboard.org/)
+-[GitHub Projects](https://github.com/beagleboard)
+
+---
+
+## Contributing
+This is an open hardware project. Contributions are welcome! You can:
+- Improve this documentation
+- Report issues
+- Contribute software (Linux, device drivers, capes)
+- Work on GSoC or student projects
+
+---
+
+## Certification
+This board is **Open Source Hardware** certified: **OSHWA Certification ID**:[US000236](https://certification.oshwa.org/us/000236.html)
+
+---
+
+> Maintained by the BeagleBoard.org Foundation