Converting site to a new template

Install a responsive theme or add css to make current theme responsive

In general, installing a new theme will not change your content, so pick a new one (or a few) from www.ads-software.com/themes

Great thank you.
So the links and content will remain the same i understand.

Any tips or things i should look out for?
like how to make sure various elements, like menus, sidebars and hope page widgets remain where they are?

When you change themes, you may have to re-drag widgets into the right places and re-assign menus to theme locations.

ok, thank you.