Resistors - proper SMD package for newbie
These package names are based on dimensions; 0402 is 0.04 by 0.02 inches, for instance. As a general rule of thumb, 1206 and bigger are easy to hand-solder, 0805 takes a steady hand but a bit of practice will have you doing them easily, and 0603 takes some real precision. anything smaller, I'd just give up trying.