Hi,
Since Nexus series has wide variety of products e.g Nexus 9K, 7k,Nexus 6k,Nexus5k,Nexus3k and FEX (Nexus 2k) . I can give you overview of all these products and if you want we can concenterate on Nexus7K,Nexus 5k/6k and FEX modules. I can cover overview of vpc,vdc,otv,fabric path and maybe able to provide you some handson NX OS,it will depend on what exactly you are looking for.
Since you mentioned ASA and Nexus together, Initally I thought you might be interested in Nexus 1KV and vASA. If you want I can show you the installation and functioning of Nexus 1kV on UCS platform.
Depending on your interest level, we can cover overview of all of the above with hands on labs and if you like we can discuss on few specific topics in details.
I am a CCIE and have 15 years of experience in customer trainings,architecture and consulting primarily for SP and Financial customers.
Thankyou!