I've got some stuff for you on my website:
hereAminet is also a good point of reference and I can't remember which issue but LSD's Grapevine magazine ran a tutorial on programming.
I 'was' a 680xx coder between 1991-97ish and have quite a large resource of reference material that I archived, which incidently I was thinking of sorting out and uploading some day.
Have a word with this guy
http://www.petergordon.org.uk/he's a very good ASM coder, hi pete

Skippy
.moo: BTST #6,$BFE001
BNE.S .moo
Mmmm, interesting Mr Bond...