Summary

Add links to The Things Stack documentation for some sections in the learning section.

Why do we need this ?

To hopefully guide users even better to the Stack docs when they are running into problems.

What is already there? What do you see now?

No links in the learning section to the Stack docs.

What is missing? What do you want to see?

An info box at some of the sections to link to the Stack docs for more information.

How do you propose to document this?

By adding the links to the learning section.

Can you do this yourself and submit a Pull Request?

Yes.