Enhance getting started guide

I'm interested in using Gentics Mesh, but the documentation around getting started and demoing the tool is sparse. A step-by-step demo of content creation would be extremely useful! If one already exists, it is difficult to find. Where is it?

Thank you!

Edit: Typo

No documentation file, test, or entry point is named. Start by locating the getting-started guide and any existing demo instructions, then define a step-by-step content-creation walkthrough that is easy to find and verify it covers the requested demo flow.

Written by the indexing model from the issue text.