You found the correct kick-start and the correct code to boot.
Kick-start is a one-hour, shared-screen Skype session that I do for customers. Generally they start with a Java-monitor tour and JVM intro, but after 30 minutes or so we usually switch to focus on the code and systems of the customer. What happens then is up to the customer, really. Some want to go really deep into an aspect of the JVM or their code, others prefer to talk about design aspects like fail-over and scalability or design for zero down-time deployment.
And yes, for this promo one of the give-aways is the one-on-one Kick-start. They tend to be the most fun and fruitful, because you get *your* questions answers and nothing else. ;-)
The probe is a JMX bridge that sends JMX data to the Java-monitor collector server. It does some thread handling and tries to identify what app server you are using, but not much else. The code is Open Source to allow you to inspect the code you are loading into your server. After all, you are downloading something that goes into machines you are responsible for. The code is also in the WAR, so you can see what you are getting.
I hope that answers your questions?