Downloadable eBook: Deployment guide for SharePoint 2013 Preview
http://www.microsoft.com/en-us/download/details.aspx?id=30384

SharePoint 2013 Preview Upgrade Process
http://download.microsoft.com/download/C/3/4/C342C7FA-521A-4DE8-B5CE-6A507CB354D3/sp2013-upgrade-process.pdf

Databases that support SharePoint 2013 Preview
http://download.microsoft.com/download/D/2/A/D2AE15B9-6F47-4328-878D-276F851C9E06/itpro-2013-db-poster.pdf

Services in SharePoint Server 2013 Preview
http://download.microsoft.com/download/7/0/3/703FD10D-75C3-4F41-86DE-ADD6F9148CD7/svs-single-farm-sharepoint-services-2013.pdf

Backup and restore: SharePoint Server 2013 Preview
http://download.microsoft.com/download/9/B/7/9B7F2298-9640-425B-A435-047A58C3FBBD/itpro-2013-br-poster.pdf

Topologies for SharePoint 2013 Preview
http://download.microsoft.com/download/A/0/7/A07928F6-5153-4E19-B682-B8D28194095A/sps-2013-topology-model.pdf

SharePoint 2013 Preview: App Overview for IT Pro
http://download.microsoft.com/download/2/2/F/22FF5430-13E7-431F-8980-C7B95CCF3C26/sp2013_apps-overview.pdf

Enterprise search architectures for SharePoint Server 2013 Preview
http://download.microsoft.com/download/B/E/3/BE3CED38-685D-4598-A4E8-B1CD9918CF68/sp-2013-enterprise-search-model.pdf

Search architectures for SharePoint Server 2013 Preview
http://download.microsoft.com/download/A/B/2/AB2BC4C9-6AA8-4B7D-96AB-CB2A19046EE2/oit2013-model-sharepoint-search-architecture.pdf

Internet sites search architectures for SharePoint Server 2013 Preview
http://download.microsoft.com/download/A/5/9/A59499E3-E9FD-4DAA-97E9-7323231F2D9D/sp-2013-internet-sites-search-model.pdf