A lot of the articles I link to at the end should be helpful. I'm torn; the compiler manuals have so much useful info in them, but they suck when it comes to learning assembly for the first time. Maybe someone else has a good book that they would recommend? Maybe this [0] but with some of the updates in mind.
I recently worked my way through "Programming From the Ground Up" and found it to be a good introduction, but note that it's only x86 (32-bit). You can easily compile and link your code in 32-bit mode, but you'll be working with 32-bit registers and pointers, and some slightly outdated techniques for making syscalls and such. At first I tried translating the book's examples to x64, but found it was pretty painful to mix that task with the complexity of learning assembly.
