I have been a Mac user for about a year and have gathered some shortcuts that I find to be real useful. A whole list can be found here on the Apple site, but the following are the ones I use regularly.

• Switch Applications = Command + Tab
• Spotlight Search – Command + Space Bar
• Print Screen = Command + Shift + 3
• Print Screen Selection = Command + Shift+ 4
• Print Screen Selection and Copy to Clipboard = Command + Shift + 4, then hold Ctrl while selecting.
• Using the Delete button like a PC Delete (where it deletes a character to the right, not left). I think I read that this works only on portable machines = Fn + Delete
• Move file to Trash = Command + Delete
• Hide / Show Dock = Command + Option + D
• When in the Finder, you can create a new folder = Shift + Command + N
• Put Computer to Sleep = Command + Option + Eject
• Force quit = Command + Option + Escape
• Turn on Zoom = Option + Command + 8
• Zoom In = Option + Command + Plus (+)
• Zoom out = Option + Command + Minus(-)

I saw the blog post for the freeware on a day (today) in which I had a need for such a product. I downloaded, tested it and was pleasantly surprised. The tool edits the documents in a different structure than Acrobat as it brings up a box with the pages listed and the options to add files, remove pages and merge documents, rather than the Acrobat version that allows the user to view the document and changing the page layout by actually dragging the thumbnail of the page to its new destination.

This edit structure isn’t as convenient as Adobe Acrobat because Acrobat shows the actual PDF whereas CombinePDF gives the user only the picture above, forcing the user to know the pages that needed to be edited prior to being able to view the document layout. Sure it is a little hiccup, but it is one thousand times better than my current solution and so I will use it with a smile.