If you happen to remember, which of those Amiga books was the most useful to you? At the moment (well, for years really) I have been in a 6502 binge, but want

If you happen to remember, which of those Amiga books was the most useful to you? At the moment (well, for years really) I have been in a 6502 binge, but want to get into m68k programming as well (and the Amiga ecosystem specifically).