Amon was built between 2002 and 2009. That being said, some of the HAKs are dated, and may no longer appear on Neverwinter Vault. And with the advent of the new CEP team, reverse compatibility is no longer guaranteed. SO, these are the files you are looking for.
Amon is a fairly huge place. Some of it is not... obvious. Here you will find pictures and maps to help you find your way around. Don't count on these being all encompassing. It wouldn't be fun if we told you everything.
Here you will find build suggestions to enhance your gameplay. Amon was designed to be a fairly difficult party world. If you are going to try it solo, you'd better have a strong build.