Good advice given but a you are going on holiday soon, to much to remember. Set your camera in Program mode, so it chooses ISO, F-number and speed. Find a scene you want to capture, hold the camera upto your eye, frame it and make sure the camera is level, then take the shot. What ISO, F-number and shutter speed did the camera choose? Check the picture on the camera screen and zoom in as required. Does it look OK? If it's not sharp, perhaps the shutter speed was too slow. You can increase the shutter speed and retake the shot. Change your position and retake the shot and see if that improves the composition.
Look at the scene you are trying to capture. What is it that makes the main subject? Make sure that this is reflected in your shot but it doesn't have to be slap bang in the middle of the frame/picture. Just remember to try different angles and most of all, have fun.
