A little late here, but I was fooling around with assembler for about 2 years making a bunch of test commands for use in AMOS. After reading the danish assembler course (found here:
http://www.palbo.dk/dataskolen/maskinsprog/ ) I got the courage to start my first 100% ASM demo a little over a year ago.
Don't panic, most of the course has also been translated to english :)
Regards,
Lonewolf10