Check out:
Cisco Nexus 9000 Series Switches
White Papers
http://www.cisco.com/c/en/us/products/switches/nexus-9000-series-switches/white-paper-listing.html
Solution Overviews
http://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/guide-c07-731461.html
Sales Resources
http://www.cisco.com/c/en/us/products/switches/nexus-9000-series-switches/sales-resources-listing.html
Presentations
http://www.cisco.com/c/en/us/products/switches/nexus-9000-series-switches/presentation-listing.html
Data Sheets
http://www.cisco.com/c/en/us/products/switches/nexus-9000-series-switches/datasheet-listing.html
ACI
White Papers
http://www.cisco.com/c/en/us/solutions/data-center-virtualization/application-centric-infrastructure/white-paper-listing.html
http://www.cisco.com/c/en/us/solutions/data-center-virtualization/application-centric-infrastructure/index.html
Cisco Application Centric Infrastructure Design Guide
http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-731960.html