geovany2009, I agree. Initially I also thought that the add ons were something of a rip off. They really ought to contain some sort of session but you can understand that since they came out for various versions of Trainz they really can not do that. Further when you take a look at both the quality of the exterior and especially the interior of the cars you can see the amount of work that has gone into them.
Here is what I did with my new PRR T1,
I had recently downloaded the UMR-TS12-Summer Route and wanted to explore the route outside the session that comes with it.
So I selected the Route and Create New Session.
Next I went to one end of the Route and, using the Train Tab and the Train Mode Button (top right in the Train Tab), selected the PRR T1 consist and placed it near the end of the route.
I exited Surveyor and saved the session as PRR T1 test run and started it in Driver.
Now I'm driving my T1 down the tracks at 80 mph, trying to anticipate where the next station will be, admiring both my new train and the new route. I've stopped at three stations so far and loaded and unloaded passengers, obeyed all speed limits and signals, and I am having good fun.
I don't recommend the UMR Route unless you have a pretty beefy computer system but take a look at some of the routes on the DLS (or one you already have), find one that interests you and that you would like to explore. Set your train up on one end and have at it.
My next UMR adventure, after I complete the current run, will be to edit the existing session, which has three active AI coal trains running, to again start at one end of the route and see if I can get to the other end. :hehe:
Have fun, geovany2009