phranque - 3:33 am on Jul 9, 2013 (gmt 0)
Moving your site - Webmaster Tools Help
Don't do a single redirect directing all traffic from your old site to your new home page. This will avoid 404 errors, but it's not a good user experience. It's more work, but a page-to-page redirect will help preserve your site's ranking in Google while providing a consistent and transparent experience for your users.