1. Principles Determine users' skill levels Novice or first-time users - e-mail Knowledgeable intermittent users - create templates Expert frequent users- macro Identify the tasks Frequent actions Less frequent actions Infrequent actions or complex actions

2. Highest frequency task

3. Choose an interaction style

5. Use the eight golden rules of interface design o Strive for consistency – consistent color, layout, capitalization, fonts o Cater to universalizability. o Offer informative feedback. o Design dialogs to yield closure. o Prevent errors. o Permit easy reversal of actions. o Support internal locus of control. o Reduce short-term memory load

6. consistency

7. Cater to universalizability