Learning Assembly

Hello, /prog/. I'm interested in learning to program in assembly, specifically for the M68k. Unfortunately, all of the texts I've attempted to read on the subject are targeted at people who already know how to program in another platform's assembly language. As a result, even though I understand the basic concepts of registers, instructions, memory addresses, and such, I'm left staring at my screen with my mind boggled.

Are there any texts out there for teaching M68k assembly to people who can program in higher level languages, but have no experience in assembly? Something like that would help me out a lot.

I've also heard that it's better to pick up a book on x86 assembly, some of which are apparently more targeted towards beginners, then figure out other assembly languages from there. Would this be the better course of action, and if so, what books would /prog/ recommend?

Hello /prog/. I'm interested in learning to write a scripting language, specifically for the .NET platform. Unfortunately, all of the texts I've attempted to read on the subject are targeted at people who already know how to create and use complicated grammars and deterministic finite automata states. As a result, even though I understand the basic concepts of LALR parsing, DFA, rules, and such, I'm left staring at my screen with my mind boggled.

Are there any texts out there for teaching grammar creation to people who can program in higher level languages, but have no experience in grammar creation? Something like that would help me out a lot.

I've also heard that it's better to pick up a book on compiler writing, some of which are apparently more targeted towards beginners, then figure out grammar creation from there. Would this be the better course of action, and if so, what books would /prog/ recommend?