docs: add comprehensive beginner's guide

Added BEGINNER-GUIDE.md with step-by-step instructions for complete
beginners with zero MCP knowledge. Covers:

- Clear explanation of what this is and why you'd want it
- Prerequisites checklist
- Detailed Telegram bot creation (with example Q&A)
- Installation with multiple methods (git and download)
- MCP configuration for different Claude installations
- Testing and verification steps
- Comprehensive troubleshooting section
- Keeping the bridge running after restarts

Changes:
- Created BEGINNER-GUIDE.md with hand-holding explanations
- Added prominent link to beginner guide in README
- Assumes zero prior knowledge of MCP or Telegram bots
- Includes real examples and expected outputs
- Troubleshooting for common beginner mistakes

This ensures anyone can set up the bridge, regardless of technical
experience level.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -6,6 +6,8 @@
 
 This is a proper **Model Context Protocol (MCP) server** that enables any Claude instance to communicate with you via Telegram. Just grant Claude access to this MCP server, and it can send notifications, ask questions, and receive messages from you in real-time!
 
+> **🆕 New to MCP servers?** Start with the [Beginner's Guide](BEGINNER-GUIDE.md) - zero experience required!
+>
 > **Free to use, share, and modify!** See [LICENSE](LICENSE) for details.
 
 ## Why This Exists