Hi @Yuri Marx 
I have got a few topics that maybe could help you/help us laugh with the certification exam

InterSystems IRIS Core Solutions Developer Specialist 

Recommended preparation: Complete available IRIS development learning content 

https://learning.intersystems.com/enrol/index.php?id=196 

https://learning.intersystems.com/enrol/index.php?id=1038

https://cedocs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?K...

https://learning.intersystems.com/enrol/index.php?id=959

Classroom: Developing with InterSystems Objects and SQL 

#Overview
    Benefits
    Features
    Platforms and Versions

#Development Introduction
    Introduction to classes and methods
    Packages
    Persistent and serial classes
    Errors

#Architecture
    Namespaces and databases
    Globals and routines
    System databases
    Naming conventions

#Classes
    OOP/SQL correspondence
    Classes revisited
    Multiple inheritance
    Class compilation
    $System

#Properties
    Properties
    Datatypes
    Accessor and mutator methods
    Reference properties
    Implicit joins
    Foreign keys
    Cloning objects
    Computed properties

#Unit Testing
    Unit testing
    Benefits
    Framework

#Collections
    Collections
    List collections
    Array collections
    Object collections
    Data population

#Relationships
    Relationships
    Many-to-many relationships
    Performance options

#Streams and Files
    Streams
    Files

#Queries
    Sets of results
    Embedded SQL
    Dynamic SQL
    SQL stored procedures
    Command line shell
    Views
    Other SQL features

#Indexes and Tuning
    Indexes
    Indexing options
    Collation
    Index types
    Query performance tuning
    Index methods

#Methods
    Inherited methods
    Scripting languages
    Method attributes
    OOP callback methods
    SQL triggers
    ProcedureBlock methods
    Code mode
    Special method syntax
    
#Debugging
    Debugging with Studio
    Debugging with ZBreak

 

npm-iris now has ZPM support! wink

Install npm-iris is easier than ever! 

USER>zpm install npm-iris 
[npm-iris]      Reload START
[npm-iris]      Reload SUCCESS
[npm-iris]      Module object refreshed.
[npm-iris]      Validate START
[npm-iris]      Validate SUCCESS
[npm-iris]      Compile START
[npm-iris]      Compile SUCCESS
[npm-iris]      Activate START
[npm-iris]      Configure START
[npm-iris]      Configure SUCCESS
[npm-iris]      Activate SUCCESS