F5 HSL logging

not sure if it is a tutorial as you are looking for, but here are some resources

general explanation of logging: https://www.youtube.com/watch?v=dcg9fxwnNTo

K17398: Configuring the High Speed Logging traffic distribution method https://support.f5.com/csp/article/K17398

and the dev central wiki has some articles including coding examples

https://devcentral.f5.com/wiki/iRules.HSL.ashx

that should get you started, if you run into any specific issue be sure to ask on dev central.