Picassa 3 is more than an editor and easy to use, and free. It is a photo library organizer and can do basic editing functions. If you want full blown editing functions, then download gimp and read the manual for help. It rivals the photoshop cs series and is free. You also need to download greycstoration plugin which is a very good free noise reduction software which integrates with gimp. If you use linux, it is already built in.