Hello Dom
I only do photography and editing out of self defence. ?
The following advice with compliments from my eldest daughter who is currently studying Graphic art and design.
http://www.picmonkey.com/editor
The first link is an on line photo editor.
The second link is a free downloadable program that can do the basics of colour correcting, changing brightness, etc. You will find the program at the following link.
The other option, that might work is Lightroom, but that is part of the adobe package, you can try it on-line, or buy it for $9.99. Lightroom is easy to use and its a great program for editing batch photos, compared to Adobe Photoshop, where you can only edit one photo at a time
http://www.photoscape.org/ps/main/index.php