How to Restore an Original Picture and Undo Edits in iPhoto

Tip 1 - Review: Photos for OS X is faster than iPhoto but less powerful than Aperture

Photos arrives with OS X 10.10.3, but should you use it? Jeff Carlson unwraps the new app and Apple's iCloud Photo Library feature.

Tip 2 - What every iPhoto user should know about image editing

If you've done nothing more with iPhoto that toss your images into it like an old shoebox, it's time to dig into the best of those pictures and edit them into works of art. Chris Breen shows you how.

Tip 3 - Use Your Mac’s Preview App to Crop, Resize, Rotate, and Edit Images

Your Mac’s Preview app doesn’t just contain PDF-editing features. It’s a great little image editor, too. Preview offers basic tools for cropping, resizing, rotating, annotating, and otherwise tweaking images.

Tip 4 - 10 Tips for Post-Processing Images in iPhoto - Tuts+ Computer Skills Tutorial

You don’t need Photoshop to make your photos look good. Not only is it difficult to learn all of the fancy features it offers, it’s also not necessary for you to spend nearly half your Mac’s value on a photo editor when Apple includes one for free. 
 
 You’ve undoubtedly heard of iPhoto, a photo management app developed by Apple and pre-installed on all Macs. It looks basic, but there’s a lot of power hiding behind that edit button. In this tutorial, I’ll show you ten ways to make your photos look more professional using iPhoto. | Difficulty: Beginner; Length: Quick; Tags: Tips & Shortcuts

Tip 5 - How to Recover Missing iPhoto Pictures

Suddenly, several of my iPhoto pictures are not showing up in my iMac’s iPhoto library. Instead, iPhoto only shows a gray icon with an exclamation point (!). How can I recover my Photos?