Limerock is still my favorite track,VERY challenging to race, easy to hotlap.
My tips for Having fun in Iracing if your starting out.
1: Never chase fast laps let them come to you as descibed in number 4.
2: practice practice practice first ..then race.
3: dont worry about what others are doing or not doing,( unless there wrecking ).
4: Don't hop from car to car,Don't rush to move up, find a car you like and stick with it, keep driving it until all those frustrating corners normally accompanied with massive sawing at the wheel on the exit suddenly feel like you have all the time in the world to make them, its a slow/fast almost effortless feeling and its worth the practice.
5: enjoy it, it's not a job