Read more about diacritics
Take a look at these tutorials:
- Learn how to build and batch-build glyphs with recipes
- Be efficient with some cool component tricks
- Advanced diacritics:
Useful scripts and plug-ins
- The mekkablue scripts and Jens Kutílek’s scripts have dedicated sections for component handling.
- The Show Component Order plug-in installs itself in the View menu and when activated, colors component in different shades according to their component order.
- Guido Ferreyra’s Show Next Font Components and Show Components Compatibility let you find component incompatibilities between masters.
Of course there is way more. Open Plugin Manager and look for more plug-ins and scripts.
Update 2019-05-15: using Glyphs 1.x? There is a Building Diacritics in Glyphs 1 video as well.