"Which way would you like it?"

 Sometimes you'll receive a script to record that contains words that can be pronounced several ways. "Data" comes to mind. Some will say it as (da-tuh. "da" as in
"apple") and others as (day-tuh). Or the word "anti." Some will go with (ant-eye) and others as (ant-ee). Both ways are acceptable. One more. "Multi." You'll hear it said as (mull-tee) OR (mull-tie). Neither is wrong. Check with the person you'll be recording for about how they want it said BEFORE you step to the mike. You'll come off as a pro. And that's the goal, right?

"Make it conversational"

 I often see producers wanting a conversational tone in the voice over. One part of that is lowering the volume of your voice. Don't shout at the microphone! It's designed to amplify your voice.

And remember, we speak in phrases. Usually, somewhat deliberately, as we think about how to express our thoughts. When reading copy that calls for a conversational delivery, don't go racing through it without pauses. A road runner approach doesn't work for conversational.

I do a lot of educational and training narrations. Using a conversational delivery is spot on. 

Here is a link to an online tutorial I voiced having to do with publishing and plagiarism.