Update (21 March 2019): my book Mastering Distributed Tracing has a newer version of this tutorial.
TL;DR; main tutorial in Take OpenTracing for a HotROD ride.
Jaeger comes with a microservices-based demo application called HotROD. I have previously published an article, Take OpenTracing for a HotROD ride, that uses HotROD and Jaeger to demonstrate capabilities of distributed tracing, Jaeger, and OpenTracing. There is also a video recording of this demo live at OpenShift Commons Briefing.
NB: this is simply a re-post of the previous article since Medium does not allow sharing articles across more than one publication.