Public Transpotation
Wroclaw has an amazing public transit system in place. Depending on where you live you choice of transportation may vary. You can purchase tram and bus tickets at kiosks through out the city. Children get the discounted tickets. If you plan on using this as you normal mode of transportation you can buy passes. Below are some sites that may be helpful.
For route planning,
Check out the super helpful website: "Jakdojade.pl" www.wroclaw.jakdojade.pl
If you use this site, you can know timetable, the number of bus/tram you need to ride, and ticket prices
from where you want to depart to where you want to arrive.
About General Public transportation's notes and tips :
(passengers ABC's, ticket types and prices and so on)
http://www.wroclaw.pl/en/public-transport (English)
If you use public transportation a lot, you might want to get Urbancard.
http://www.urbancard.pl/en/index.html (English)