Alternatively write some basic constructs (loops, functions etc.) in C and inspect the generated assembly. You have to fiddle with compiler settings a bit becau

Alternatively write some basic constructs (loops, functions etc.) in C and inspect the generated assembly. You have to fiddle with compiler settings a bit because the optimized output isn't very helpful but for me it was extremely helpful to see what ASM code my compiler tool chain actually produces (to understand the typical function call structure for example). Doing simple reverse engineering challenges is also a fun and easy way to get a patter matching kind of feeling for assembly.