How the Early Church Found the Trinity in the Old Testament

Kyle Hughes has a good summary here.

Why Don’t the New Testament Authors Explain the Trinity?

 Greg Lanier asks and answers this question here.

The Trinity in Genesis 1?

Scott Swain's has a careful post here explaining how the Trinity might be present textually in Genesis 1.

5 Myths about the Trinity

Fred Sanders identifies and discusses them here.

The Trinity and Evangelism

  
See Glen Scrivener's post on the importance of explaining the Trinity in evangelism here.
 

Paul and the Trinity

  
See this article in First Things.
 

Seitz on the Trinity in the Old Testament: A Canonical Approach Audio

See here for audio of Christopher Seitz speaking on "The Trinity in the Old Testament: A Canonical Approach."

HT: Rob Kashow

"Stupid Statements" Related to the Trinity

Michael Patton has a nice post identifying and interacting with "stupid statements" or examples that are frequently used in trying to explain or illustrate orthodox Trinitarianism. Read the post here.

A Bibliography on the Trinity

Nick Norelli has a pretty comprehensive bibliography on the Trinity and Trinitarian concerns. You can access this thirty-six page document here.