Dobry den

IN your own country you are only allowed 2 travel days, for the trip OUT and IN-does not need to be very first/last even. IF you have a pass for long time and want to return home more as once, then you need to buy normal tickets to/fro border points-or use bus or plane or whatever.

YOu can use the pass as you like-also for various daytrips out of a city you stay in for a while (and come back same day and do another destination tomorrow)-as long as you use the trains of the companies that accept passes.

ONLY today there is still the birthday discount of 50% for passes for 1- 2 -3 monthes-CD in their INTern offices can also sell you that as paper pass (but then have to state startdate)

Yes, as long as you only use a maximum of two travel days in your country of residence you can travel as much as you like on any route.