Discussion: Rearrange content across modules for balance and flow

[bencomp]

This issue is a follow-up to #90, of which the other points made have been addressed.

The submitter (not the issue opener) said:

Personally, I think the class may be reorganized. Currently, there are a lot of information in "working with OpenRefine" section. For example, Transforming data using GREL could be moved to the "examine numbers" section. That part is also doing data transformation. I would start by using the common transfer, then introducing GREL. GREL might be a little bit tricky for beginners, so I would not introduce in the earlier part of the class.

I would like to try to rearrange various sections within their module or across modules. Other issues mention the order of content too, like #84 and #95. This issue will be updated with more specific ideas.