GIMP is a great, free tool for tweaking image problems. Many photographers have trouble with overexposed sections of images. GIMP offers different options for repairing these photographs with tools similar to ones offered by Photoshop.
Digital Photography Software Tutorials
Photography doesn’t end with the camera, nearly anyone who owns a digital camera will also own some sort of software. There is a vast array of software out there designed with the photographer in mind, from photo editing software to file compression programs. As with anything unfamiliar, there is always a learning curve. Here you will find well written, easy to understand tutorials to help get you on your way.