Anyone knowing a good online asambler tutorial for newbies?

what micro ?

Your have a choice of many.

(asking this questions is a good way to get good arguments going as everyone has their own favourite).

For starters(the more common)

pic from microchip, avr from Atmel, msp430 from TI,

8051's from many vendors(Atmel, intel, winbond, cygnal, siemiens, = philips),

few links in alphabetical order (google should find you many others)

AVR

register its free then go to academy and get the beginners guides and articles.

pic=20 many tutorials on the web. If possible start with 16F877, 16f628 or 16f88. Or one of the 18f series pics

see if you can get your hands on a copy of Programming and Customising Pic microcontrollers by Mike Predko

any of the square one pic books.

msp430 I haven't used any of these

8051 look at the tutorials. some nice projects with code

others Z80 from zilog

motorola 68HC xx

68H05

arm=20 (32 bit) newer philips LPC210x chips

for some cheap pic , avr and 8051 boards

Alex