Which Objects support custom fields?
Account, Prospect, Opportunity
Which type of picklist is fully supported in OR and which one is partially supported?
Standard picklist is supported in OR, add validations to control values available
Multi-picklist: OR can receive value but not write back to CRM
How do custom fields relate to and work with triggers?
Triggers work with custom fields - automate workflows by adding custom fields as condition variable
How do you create custom fields?
System config -> Relevant Object (A,P,O)