DO have your license, registration and insurance ready to go before the officer even gets to you. Once pulled over, the officer will look at your finger dexterity and response time, if he sees you are delayed, this can be an indicator for them to arrest you. You can prevent this if you have your documents ready before they can watch you.
DON'T answer if the officer asks if you have drank alcohol. Politely state that you are declining to answer. This way there are no further statements that could be used against you in court.
DO invoke your right to remain silent. You do not need to respond to questions the officer asks besides the basic necessities.
DON'T answer any additional questions. Politely decline to answer anything the officer asks as these questions are all designed to be used against you at some point.
DO take the breath test at the police station. If you refuse to take this test, you can automatically loose your license for up to one year or longer. If you take the test, you can have a DOL hearing.
DON'T consent to taking any of the voluntary field sobriety tests at the roadside as your inability to perform them will be used against you in the court.
DO use your right to consult an attorney. If you cannot afford a private attorney, a public defender will be provided for you. You can state this at any time and the officer will not be able to prevent you from speaking with this person.