In the past I’ve had some both good and bad rounds with new courses. A lot of scoring is how I roll it, so getting there early enough to get a feel of the greens is important. Sometimes I have driven it aggressively and been rewarded by a great shot to tight target that I probably shouldn’t have aimed at, and occasionally screwed by a blind hazard that I couldn’t see on a perfectly decent shot.
Most importantly have fun, try not to grind too hard, and use a GPS app like 18birdies or Grint that can give you an idea of some features on the course that you may not be able to see from the tee.