To use lximage use the arrow to the right to view the next file in the folder and the arrow to the left to view the previous folder. To open a new picture press the open button which looks like a blue folder with a piece of paper in it. To save the file as something press the button that looks like a floppy disk.
If you wish to print a picture after viewing it from the file menu -> print or press control+ p to bring up a print dialog.
To rotate an image to the right press the circular arrrow that points to the right or go to edit -> rotate clockwise. To rotate conterclockwise use the circular arrow pointing to the left or edit ->rotate conterclockwise. To zoom in on a picture press the icon with a magnifying glass with a + symobol on it or press control + +. To zoom out press the button of a magnifying glass with a - symbol in it or press control + -.
To view the next picture on your image press the right arrow and conversly to view the previous image press the left arrow. To view thumbnials of the current directory you can toggle thumbnials and thumbnails will show at the buttom with a scrollbar at the bottom of the window to view the whole folder.