Try Picasa. It's a free download Google product and is very easy to use. It catalogues all your pictures by date taken, you can do some basic editing but it is extremely simple.
For example: you take a shot, it's a bit dark and you've managed to include your car bumper in the corner of the shot, also there's a dark spot on the image because there's a bit of dust on your sensor.
In Picasa you can lighten it slightly, crop it so you loose the car bumper and make the composition better and finally use the magic eraser to get rid of the spot.
You can then print it from Picasa, make a slide show or even send a small version direct from Picasa by email to a friend.
It really is good for a freebie in fact I think it's better and easier to use than some of the paid for editing software.
Also, it doesn't alter your original image. That remains in My Pictures, if you want to keep your Picasa edited version you export it back to My Pictures in its own folder.
You really can't go wrong. I've saved loads of shots simply by cropping them or straightening the horizon.
Anyway, those are my thoughts (I don't work for Google)
I notice you're from Fiji. I have a friend/colleague from Fiji who is also a keen photographer and he has taken some wonderful shots out there. It looks lovely. I'm sat here in Britain, it's Easter and it's snowing!
Best wishes, John