The EARK3 specifications are built on a number of other standards and specifications, including METS and PREMIS.
Engaging fully with the EARK3 specifications therefore depends on having a number of underlying skills.
There are a number of on-line resources which can help:
|W3Schools is an excellent resource: https://www.w3schools.com/
|TS EAS (responsible for EAD and EAC-CPF)
|TS EAS GitHub