Move Sidebar Shop By Or Categories To Left Or Right
Move sidebar with “Shop By”, “Compare”, “Categories” to other side#
Refers to left sidebar:
<reference name="left">
Refers to right sidebar:
reference name="right">
Changes should happen in the catalog.xml file of your theme
Ordering within a block
before="<element-name>" or after="<element-name>"
before="-" or after="-"