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Minky HyunMinky Hyun 

I've never used development console, and I'd like to make a small change to an existing Apex trigger. How do I get started?

I've been a long-time Salesforce administrator and understand how to make small changes on the live environment, but I'd like to learn how to make a small change to an existing Apex trigger that my development vendor created.  I believe I cannot make the change on the fly on the live environment but I never had to manage sandbox, make changes there and push it out to the live site.  How do I get started?  Can I simply use online training tools to learn the steps and manage this on my own?  
Jayanth ThathapudiJayanth Thathapudi

Please follow the below steps
!. Open Developer console
2.Click on "File"
3.Click on "Open"
4.Select "Triggers" and double click on the trigger which you want to change.

Go through the different modules in the ""