Folks, I am trying to understand this process, but am lost.

Excelledsoftware wrote above:

"Sounds like you need to compress your pictures and change the resolution. This should be in the format picture dialog box. > Compress pictures (all pictures in document) delete cropped areas and change your DPI to the lowest setting. Be sure to make a backup before you do this in case something gets messed up after the conversion."

I am not sure I know which box you are talking about. Under HOME, I see "Insert" picture button, with 4 options. I see "Format" with only Arrange as an option. So I do not know what to do here.

Hani followed with: "After all, I'm sure the pictures is the main reason, So don't use PowerPoint compress pictures - it's useless -, Use external picture editor to compress it. But first compress some of your pictures, And put it in new presentation and see the result."

I looked for "external picture editor" but do not know where that is -- to compress it.

The resource book MS PowerPoint 2010 Bible - is online with the Public Library and I have looked around in that, but do not see these items.

What I did the other day in my beginnings, was - open a clean slide, type some words, then using web sources for images, right clicked on an image, copy, then paste in an open part of the slide, and it went in, then resized and went to the next slide -- did the 47 total with 110 images, and found out how big all of that was.

I am a real beginner here, just wanting to do a presentation for public viewing on: The History of Mystery (mystery writing from Edgar Allan Poe to the present). So any further help will really be appreciated.

Thanks, Roger