It’s not a secret that for consultant extremely important ability to build and represent presentations. Bad presentation often does more harm than good. Unfortunately very often presentations are not enjoyable and ineffective. The focus on technique and software features often distracts us from what we should be examining. Many of us spend too much time fidgeting with and worrying about bullets and images on slides during the preparation stage instead of thinking about how to craft a story which is the most effective, memorable, and appropriate for our particular audience.

I find excellent book:
 Guy Kawasaki “Presentation Zen Simple Ideas on Presentation Design and Delivery"

 which present ideas and pointers in how to make interesting presentations that can capture and allure the audience. I strongly recommend this book to those who want to learn how to do away with PowerPoint and start doing a presentation that can engage your audience and spread your ideas.

I put some tips that I found in this book:
The questions you gave ask before you make presentation are:
•How much time do I have?
• What's the venue like?
• What time of the day?
• Who is the audience?
• What's their background?
• What do they expect of me (us)?
• Why was I asked to speak? • What do I want them to do?
• What visual medium is most appropriate for this particular • situation and audience?
• What is the fundamental purpose of my talk?
• What's the story here?
• And this is the most fundamental question of all. Stripped down to its essential core:
What is my absolutely central point?
Or put it this way: If the audience could remember only one thing (and you'll be lucky if they do), what do you want it to be?

Some useful tips for successful presentation building:

•    Never, ever hand out copies of your slides, and certainly not before your presentation.
•    Make the audience aware that they have a gap in their knowledge and then fill that gap with the answers to the puzzle (or guide them to the answers). Take people on a journey
•    Speak of concrete images, not of vague notions.
People are emotional beings. It is not enough to take people through a laundry list of talking points and information on your slides—you must make them feel something.
•    Great ideas and great presentations have an element of story to them. Good stories have interesting, clear beginnings; provocative, engaging content in
the middle; and a clear conclusion.
•    learn a lot about how to present images and words together by exploring the so-called "low art" of comics.
•    Good designs have plenty of empty space. Think "subtract" not "add."
•    While simplicity is the goal, it is possible to be "too simple." Your job is to find the balance most appropriate to your situation.
•    No one can do a good presentation with slide after slide of bullet points.. Bullet points work well when used sparingly in documents to help readers scan content or to summarize key points and so on. But bullet points are usually not effective in a live talk
•    Displaying quotations in your presentation slides can be a very powerful technique.
•    Rather than using a small photo or other element, consider placing the text within a larger photo.
•    Remember, that empty space in a design is not "nothing," it is indeed a powerful "something," which gives the few elements on your slide their power. .
•    if the text element (or chart) is the highest priority, it is important not to have images of people looking in the opposite direction from those elements.
•    Good presentations will incorporate a series of presentation visuals that have a mix of slides that are symmetrical and asymmetrical.
•    Cliff Atkinson reminds us of the evidence that supports the claim that the more
the audience can both see and hear you, the better. "It turns out that when you watch people speak, the visual cues help you to predict and understand the auditory cues that follow soon after
•    Use rule of  thirds ( a basic technique that photographers learn for framing their shots.Subjects placed exactly in the middle can often make for an uninteresting photo. A viewfinder can be divided by lines—real or just imagined—so that you have four intersecting lines or crossing points and nine boxes that resemble a tic-tac-toe board. These four crossing points (also called "power points," if you can believe it) are areas you might place your main subject
 •Ask yourself this: What information are you representing with the written word on a slide that you could replace with a photograph (or other appropriate image or graphic)
•Most of the images used in this book are from iStockphoto.com.


Here are some other places to get low-cost images
• Dreams Time (www.dreamstime.com)
• Fotolia (www.fotolia.com)
• Japanese Streets (www.japanesestreets.com)
• Shutter Stock (www.shutterstocl<.com)
• Shutter Map (www.shuttermap.com)

Here are a few sites that offer free images
• Morgue File (www.morguefile.com)
• Flickr Creative Commons Pool (www.flickr.com/creativecommons)
• Image After (www.imageafter.com)
• Stock.xchng (www.sxc.hu)
• Everystockphoto search engine (www.everystockphoto.com)