A couple of nuggets of gold when it comes to driving Microsoft PowerPoint:
I would think that most people already know that the F5 key is the short cut key for starting a Slide Show from the first slide. However, quite often during the editing process it's useful to be able to start a show from the current slide - and you can achieve this with Shift + F5.
Faced with less time than you originally planned, how do you get through your slides quickly, without making it look as though you're skipping any? If you've memorized your slide numbers you can skip to any one by simply typing the slide number, press 'return' and the Slide Show will jump straight to that particular slide. For example, suppose to save time, you decide to cut the material and the the six slides after number 16. When you've finished talking to slide 16, you say a few words linking to the content of slide 23 and type '2' and '3' on the keyboard and then hit 'return'. The slide show jumps straight from slide 16 to slide 23.
I hope this has been useful to you.
If you have ideas for material you'd like us to cover in the Journal, then please let me know.