Improve formatting and readability of new contributor guide

This commit enhances the formatting and readability of the new contributor guide. Changes include:

- Added a main header for the document
- Organized content into logical sections with subheaders
- Used bullet points for community joining instructions
- Numbered the steps for getting familiar with the contribution process
- Improved overall structure and visual hierarchy

These changes make the guide easier to read and follow for new contributors, potentially increasing engagement and participation in the community.

Author: henriquesantanati

mentoring/new-contributor-orientation/new-contributor-resources.md

@@ -1,8 +1,18 @@
-Join the Kubernetes Developer Google Group (k-dev): https://groups.google.com/a/kubernetes.io/g/dev
-Check out [kubernetes/community](https://github.com/kubernetes/community) for an overview of our community.
-Follow the New Contributor Guide (k8s.dev/guide) to get familiar with various contributor tools and processes.
-The First Contribution Guide(k8s.dev/guide/first-contribution/) will walk you through the process for your first Pull Request (PR)
-Check out the Resources List at https://bit.ly/kubernetes-resources
-Come join us in the Kubernetes slack: https://www.slack.k8s.io 
-* Join the #kubernetes-new-contributors channel
-* Join the channels of 1 or more SIGs you’re interested in
+# Getting Started with Kubernetes Development
+
+## Join the Community
+
+- Join the Kubernetes Developer Google Group (k-dev): [https://groups.google.com/a/kubernetes.io/g/dev](https://groups.google.com/a/kubernetes.io/g/dev)
+- Check out [kubernetes/community](https://github.com/kubernetes/community) for an overview of our community.
+- Come join us in the [Kubernetes Slack](https://www.slack.k8s.io):
+  - Join the #kubernetes-new-contributors channel
+  - Join the channels of 1 or more SIGs you're interested in
+
+## Getting Familiar with the Process
+
+1. Follow the [Contributor Guide](https://www.kubernetes.dev/docs/guide/) to get familiar with various contributor tools and processes.
+2. Read [The First Contribution Guide](https://www.kubernetes.dev/docs/guide/first-contribution/) for a walkthrough of your first Pull Request (PR) process.
+
+## Additional Resources
+
+- Explore the comprehensive Resources List at [https://bit.ly/kubernetes-resources](https://bit.ly/kubernetes-resources)