Brushing your teeth once in the morning and once at night is a good practice. However, you should wait for about 30 minutes after you have eaten to avoid pushing acid from the food into your teeth.
Whether you choose an electric or a manual toothbrush, you can receive a great clean! Just be sure to select a toothbrush with soft bristles.
You do not need to floss your teeth as regularly as you brush them, however, you should aim to floss them once a day.