you are ahead of those who started with a Package.
Once your bees have been installed, a feeder must be applied. Careful consideration should be taken when choosing your feeder. Both internal and external feeders have their pros and cons. Entrance feeders have the advantage of allowing you to check the feed levels and apply more if needed without opening the hive. Internal feeders such as division board feeders and hive top feeders, allows for more feed to be applied to the hive and decreases the chances of robbing.
Keep the feeder on until your bees are able to sustain themselves (even then, having a feeder on for that rainy day is recommended). If temperatures do not drop below freezing, a 1:1 ratio of sugar to water is an acceptable feed. The sugar water mixture will help stimulate colony growth. Add a feed supplement to increase the colonies growth and health. If colder weather is forecasted, feed with fondant or other semi-moist, hard feed.