There are many reasons why you would want to edit your photos, whether it's for basic touch ups, color corrections, or maybe you want to make it a better, more powerful, photo that tells a story. Whatever your reason have fun and get creative. There is no shame in editing photos, in fact, it can be downright addicting, and sometimes you can really over do it.
Below, I got a really neat shot of a Giraffe with my GoPro. I thought it would look more interesting by fixing the sky, adding more trees in the background and adding a little bokeh to isolate the head and create a longer perspective.
Shot with GoPro Hero 3 Black Edition hand-held. I placed the camera on timelapse mode and stuck the camera way out in front of the giraffe's face. Then I chose the best photo out of the bunch. Man, this little camera does take crazy good shots.
So, what photo editing software should you use? This is a tricky question, but the good news is, you might have a powerful photo editor right in your phone. No, that is not a typo. You can use your phone to edit photos, and edit them really well I might add. There are many photo editing software that you can buy for your PC or Mac like: Adobe Photoshop, Lightroom, iPhoto (or Photos for OS X) etc. But maybe we don't need these programs anymore, we can just use our phones?
Remember when Google bought NIK photo plugins a while back? (This is the software I use in my Photoshop to edit photos) Well, they put that same technology into their Android phones. So you can basically edit the same way on your phone as I do in Photoshop. You would need to transfer your photo from your camera to your phone, but that shouldn't be a problem since cameras are starting to come with WiFi and Bluetooth connectivity.
So play around with your photos in your phone to get the hang of it. If you edit and save your photo, don't worry, your camera should save a new copy in a different folder so you don't destroy the original.