Languages
BPMN: http://www.omg.org/spec/BPMN - version 2.0.2
CMMN: http://www.omg.org/spec/CMMN - version 1.1
DMN: https://www.omg.org/spec/DMN - version 1.3, 1.2
PMML: Predictive Modeling Markup Language - version 4.4.1
CQL: https://cql.hl7.org/ - versions 1.4 STU4
Training for BPMN, CMMN and DMN
Bruce Silver at www.methodandstyle.com has authored multiple books for BPMN, DMN and CMN. On-line training with certification is also available.
FEEL (Friendly Enough Expression Language)
FEEL (Friendly Enough Expression Language) is the default expression language used within BPM+ models. While the BPM+ standards allow for a variety of expression languages, FEEL is the one with broader support in BPM+ tooling.
https://www.trisotech.com/infographics/feel-poster
https://www.trisotech.com/infographics/feel-functions
FHIR
FHIR is a healthcare platform standard that provides (meta)models for data exchange, knowledge representation, APIs and architectural paradigms.
HL7 FHIR http://hl7.org/fhir