[andreareina]

Pay attention to how you feel when using things, and see if you can figure out the elements of the design that make you feel that way. Ask yourself what things does the tool make easy and what does it make hard and how that effects the way you use it.The Design of Everyday Things gives a good starting point of features and antifeatures to look out for, but don't take it as gospel; nothing is going to replace you forming (and introspecting!) your own opinions.