There is training in the NS Learning Portal Customize PDFs via WYSIWYG Mode (Advanced PDF)
Manually Include Fields (Advanced PDF)
Access Additional Fields (Advanced PDF)
Transform and Calculate Data (Advanced PDF)
Investigate Architecture (Advanced PDF)
Implement FreeMarker Use Cases (Advanced PDF)
Implement BFO Use Cases (Advanced PDF)
Create Scriptable Templates (Advanced PDF)
Localize Content (Advanced PDF)
Leverage SuiteScript 2.0 (Advanced PDF)