I just released the ultimate Cisco ASA NAT configuration guide -- 100% free, no sign up, no paywall, no mandatory e-mail subscription, no nothing =).

The article is incredibly thorough and covers pretty much everything you would need to know to really understand how to configure Auto NAT or Manual NAT to accommodate just about any address translation scenario imaginable.

The article is available here:

pracnet.net/asanat

To make it easy to check out a specific section, here are all the topics covered in the Configuration Guide:

• Part 1 – NAT Syntax
  • Objects
  • Real and Mapped
  • Auto NAT
  • Manual NAT
• Part 2 – NAT Configuration Examples
  • Static NAT
  • Static PAT
  • Dynamic PAT
  • Dynamic NAT
• Part 3 – Advanced NAT
  • Policy NAT
  • Twice NAT
  • NAT Precedence
  • Identity NAT
• Summary

I sincerely believe that if you read the whole guide, start to finish, you could go from having no exposure to Cisco ASA's NAT functionality, to being an expert at it. I'm open to hearing any feedback which might agree or disagree with that.

Hope it helps =)

^{Edit: remove the small note about EoL announcements, the goal of the post was to announce the configuration guide not discuss the EoL/EoS}