Art of Asm
An on-line book called "The Art of Assembly Language Programming".

Assembly Internet Resources
Assembly Internet Resources

MoonWare ASM Links
MoonWare ASM Links

INTEL.DOC
List of the 80x86 op codes and flags

Cameron's 80386+ Programming HOMEPAGE
Nice place for assembler info and faqs, etc. (click on the knowledge base)

Asm Programming Page
Place for beginner asm coders

Adam's Programming Page
Pretty good tutorial on Assembly programming, plus some pascal stuff

Assembly language tutorial
On-line