While the OA release documentation is a great reference once you already
know the API,
the Si2 API Tutorial
is 800+ pages
to provide a step-by-step, self-instructional approach to the OA model,
including hundreds of illustrations and many self-check exercises (with answers). Written by the Si2 staff,
the Si2 API Tutorial starts with basic OpenAccess concepts,
incrementally building on successively more complex ideas, until
the whole model has been methodically explored – including effective
use of the OpenAccess release documentation.
With yearly new editions, Si2 provides on-going enhancements, adding errata,
coverage of new model classes,
and detailed explanations of behavioral semantics
(List of Chapters).
The Si2 OpenAccess API Tutorial
is a must-have for OpenAccess developers.