You need a 68000 book as reference. Charts/index/examples are vital stuff!
I recently got one called "Programming the 68000" by Steve Williams.
It's pretty solid.
Without a good 68000 reference, and an understanding of how ASM pieces together, you are in for a long haul!
next, you should figure out what it is you want to do with your programming...
do you want to make a game?
music software?
Officestuff?
whatever it is, break it up into tiny little pieces and get them all to work.
For example if you want to make a game, figure out what your planned game is...
then get a character moving around via keyboard or joystick input, animate him, etc.
then work on getting backgrounds/levels up and scrolling, etc.
Don't try to just dive in head first! Little baby steps. You'll hone your skills, get an understanding of the hardware, and be able to piece it all together.
