docs(readme): add link to learning portal, disambiguate difference wi…

…th docs (#4128)

* docs(readme): add link to learning portal, disambiguate difference with docs

* docs(readme): punctuation

README.md

@@ -41,7 +41,10 @@ pip install -U jina
 ```
 More install options including Conda, Docker, Windows [can be found here](https://docs.jina.ai/get-started/install/). 
 
-## [Documentation](https://docs.jina.ai)
+## Learning and Docs
+
+- Brand new to Jina? Check our **[Learning Bootcamp](https://learn.jina.ai)** to get up to speed.
+- Check our **[comprehensive docs](https://docs.jina.ai)** for deeper tutorials, more advanced topics, and API reference.
 
 ## Get Started