Going hand in hand with the G'MIC command line tutorials evolving at gmic.eu/tutorial, some of the more intricate “Beginner's Cookbook” recipes now have corresponding Gimp-G'MIC filters.
The tutorials at the G'MIC home site are primarily for the G'MIC command line. However, the Gimp G'MIC plug in filter set has tools to examine and debug Gimp-G'MIC filters, which, providentially, are also very useful for observing the G'MIC interpreter in operation, essentially, the same interpreter that processes the command line. In light of this, the tutorial writers decided that a good way for command line students to grasp how a sequence of commands works would be to observe their execution through the Gimp-G'MIC plugin. It is a fairly straightforward matter to wrap a G'MIC command sequence into a Gimp-G'MIC filter and the effort relieves the student from entering sequences by hand, an error-prone process which can frustrate more than enlighten. The wrapping technique may be found on the G'MIC wiki: “How to Create a Custom Filter in the G'MIC Plug-in.”
The installation of Gimp-G'MIC filters is semi-automatic. The primary filters are distributed from the gmic.eu server and all filters from that source can be downloaded and installed by using the refresh button (circular arrow) at the bottom of the Gimp-G'MIC plugin filter main dialog box. The filters spun off from G'MIC command line tutorials may be found in the “Testing → GMIC Tutorials” branch.
If you have just installed the Gimp-G'MIC filter plug in, you may not see all available branches, including the Testing branch. Should that be the case, refreshing the plug in should load them: