How do you board a bus and know where to stop?

Question

This is really stupid but I don't know how! Do you slide a ticket or something into it? And how do you know where the bus is suppose to be going?

IF it helps, I live in TORONTO, ONTARIO

We have the TTC here.

Answer 1

know  where you  are   at and  know   where  you  are  going

Answer 2

Call the bus co info line they can tell you the schedule for each bus line. You can tell them where you are & where you want to go and they will tell you what bus to take & what the fare is. Also where to get on the bus and get off.