Here are the most commonly used modules in the Assembly Editor:

Data Streams Split
Text Builder
URL Builder
HTTP Transaction & HTTP Multipart POST
Service Credentials - Save and Get
No Credentials Needed
Subassembly input/output modules (4)
Utility - Keyvault Value
OAuth Transaction & OAuth Multipart POST
OAuth v2.0 Workflow & v1.0a Workflow
JSON Builder, JSON Array Builder
XML Builder, XML Row Builder
Dialog Window Data Input Form
Loop
Conditional Loop
Conditional Execution
Fatal Error
Trigger Unique Rows
Trigger
Trigger Two-Way Sync
Get Dynamic Trigger Fields
Webhook
Action
Action Output
Action Two-Way Sync
Action Skip Data Row
Extension modules (2 for JavaScript or Java/PHP)
Text Entry Parameter
Utility - When In
Dropdown Parameter (Populated)
Simple DB INSERT & SELECT
User Account Info
System Info
System Time
DateTime modules (3)
Text from XML Nodes
Fetch Paginated Results

Review their help info, sample assemblies, and existing assemblies where used to learn them.

Did this answer your question?