Hi,

To show category on the left side of the store, please go to the file app\design\frontend\default\sns_nova\layout\local.xml try to add the code bellow to right before text ‘<reference name=”before_body_end”>’:

<reference name="before_content">
            <block type="nova/wrapper" name="sns.slidenav">
                <action method="setId"><id>sns_slidenav</id></action>
                <action method="setParams"><params>class="wrap"</params></action>
                <block type="catalog/navigation" name="catalog.nav" before="catalog.leftnav" template="sns/blocks/sidenav.phtml"/>
            </block>
        </reference>

1. Sorry I dont really understand what you mean, please show me more clearly about your idea.
2. Please try to refer some links bellow
https://www.youtube.com/watch?v=osTa0LAszB4
https://www.youtube.com/watch?v=wfv2gOuRMDg

Regards,