Welcome to the SkyRoadster forums.
You ask a question that has been asked and debated quite a bit. Before opening this all up let me say the following:
FOLLOW the recommendations of your owner manual.
That said - Many people have many ideas as to the frequency of changes and the "First Change." To start what will be a lively discussion
Let me tell you what I did.
Changed oil at 1000 miles the first time -- may or may not do any good - certainly does not hurt.
Changed oil then when the DIC showed 20% left as the owners manual stated (actually brought it in at 19%) I had about 6000 miles on the car - so 5000 miles on the oil. I saw the oil (asked to) and it looked like new - in fact the Tech asked if I had changed it earlier and not reset the DIC.
Secondly -- Search the forums for things like (First oil Change" or just Oil Change -- you will be reading for a long time
Anyone else???