I have had more than my share of training and classes on public speaking/teaching, and am very familiar with the "Apple" way of giving a talk.

I have had more than my share of training and classes on public speaking/teaching, and am very familiar with the "Apple" way of giving a talk. Introduce yourself, tell them what you are going to talk about, talk about it, tell them what you talked about, take any questions. It sounds terribly formula, but it actually works to make it memorable for an audience.