TSS Progression is know... in part.
I think currently they are adding steps they don't need and making it harder than needed... but only time will tell if I am right.
The problem is the progression takes place in open zones and involves rare spawns. There for the people that know (or atlest think they know) the progression don't want to spill the beans and add to the already bad compition for the progression camps/areas.
To give you a place to start... do any and all single person progressive tasks. For instance in Dire wind there are a few people at the druid rings that have you do non-repeatable step orinated "solo" tasks that require a group to complete.
I am not saying those are part of teh progression, just if you did ever quest like those you find in TSS you will be hitting progression parts at the same time.