There are 2 ways to make your site mobile ready.

1 - The recommended way is to login to your wizard and go to Select Site Style and under the "Featured" category, choose one of the templates listed. These are mobile ready by default and built on responsive grids.

2 - If you wish to keep the template you are currently using, you can login to your wizard, go to Select Site Style and check the box under the image on the page that says Enable Mobile Site. Warning: Some of the older template styles will not allow certain features to work.