GEDitCOM II and GEDitCOM (which is coming soon to the AppStore) have many features. For first-time users, a good place to start is built-in "Quick Start Tutorial." To access it:
Start GEDitCOM II or GEDitCOM
Choose "Quick Start Tutorial" from the "Help" menu
You can read through the tutorial or click topics on the left to browse the rest of the embedded help information
For more tutorials, see the ones listed below.
Those with programming experience, can refer to the "Scripting" above for tutorials on using Internal Scripts or AppleScript to create your own features for GEDitCOM II and GEDitCOM. Those using GEDitCOM II can see additional information about scripting with Python.
If you and one or more family members all have GEDitCOM II or GEDitCOM, this tutorial gives one solution for collaborating on the same family tree file.
This tutorial shows you how to select any subset of records from your genealogy data and export a stand-alone GEDCOM file suitable for transmission to friends or relatives or for various other uses. The tutorial includes recommended extra steps to use when you want to transmit multimedia files along with the GEDCOM file.
One thing you can do with the GEDitCOM Editor is to add new languages to the "Browser Styles" available in the "Extensions" menu in GEDitCOM II. You can add languages without any programming skills, but you will need language skills. This tutorial explains the process. It is simple, but requires time to translate all key phrases.