The OSArch Discussion forum has lots of discussions about FreeCAD. You can improve this wiki by turning some of them into pages in this series.
If you're a fan of FreeCAD this would be a great thing to do.
Always consider if your contributions would be better placed on the FreeCAD wiki as part of documentaiton of the BIM Workbench. I think what's appropriate on our wiki is pages on how FreeCAD works together with other applications. That's what we're all about here. Some examples that could be turned into articles: a summary of this paper LOW-COST_4D_BIM_MODELLING_A_COMPARISON_BETWEEN_FREECAD_AND_COMMERCIAL_SOFTWARE, Sverchok and FreeCAD in Blender, Dynamo and FreeCAD, a summary of FreeCAD and BIMServer videotutorial [Spanish]
Any volunteers for one of those? The existing FreeCAD pages also need some love.