Hello. i'm new to asm programming and started with FASM because of its relative simplicity. i use windows 7 64bit. i currently write basic programs. i would appreciate some help on where to learn better especially in the field of win64 asm which is quite strange compared to 32bit. thanks in advance.

http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx
+

rsp myst be 16 byte aligned
shadow space required, stack goes like that:

+0 return address
+8 32bytes shadow
+40 5th argument
+48 6th argument
...

caler is responsible for clearing the stack

Be sure to get Feryno's FDBG to debug your effort!
(It's a sticky in the Project section of this board.)