I started out just plain wanting to study assembly language. I went to a computer school which informed me that I had to learn C first. Which pissed me off, because C is for WIMP's (Window-Icon-Mouse Programs... hehehe). So I went away, bought myself a book, and learned it by myself, crashed my dad's office computer a couple of times, and got me grounded for a few months.
You WERE asking how I got started...
My suggestion is, try to look for a good book, such as "Assembly Language Inside & Out" Most good books on asm you'll find will be rather dated but hey ho you gotta go with what you've got. With a bit of work you can 'update' what you've learned. "Information has a tendency to be free. Which means someone will always tell you something you don't want to know."