How to introduce another presenter in 3 steps: Karl Kwan explains why it is important to know how to introduce another speaker and three steps to use in doing so.
How to Introduce a Speaker: 16 Essential Tips for Success: Andrew Dlugan gives for creating and delivering an introduction.
The Topic Sentence by Jock Mckenzie.
Killer Presentation Skills: Tips for effective public speaking.
How to give a presentation in English: Tips for overcoming difficulties with delivering English presentations for people that speak English as a second language.