[Enhancement] Improve README.md with Introduction, Usage Guide, and Additional Sections

[atul812]

The current README is a good start and already lists many job resource categories, but I believe we can make it more beginner friendly, visually appealing, and contributor friendly.

Proposed changes:

1. Add a clearer Introduction / Purpose section
2. Add a How to Use / Navigation section
3. Add a “Submit a resource” guideline (format, criteria)
4. Add Acknowledgements / Maintainers section
5. add “Last updated” timestamp or status

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[atul812]

@DhanushNehru I’d like to contribute this update under Hacktoberfest. Could you label it as hacktoberfest-accepted when I raise the PR?

[atul812]

Hi @DhanushNehru
Just wanted to follow up on this issue — I’ve already submitted a PR addressing all the proposed README improvements (Introduction, Usage Guide, Contribution Section, etc.).

Could you please take a look when you get a chance?