Your first step to start driving license course is to get a PKK number.
Course may be taken by a foreigner who has been staying in Poland for at least 6 months, has a document confirming legal stay in Poland.
You need to get PKK:
a temporary residency address
driver license photo
resident card or passport
All the above items for Pkk number can be obtain personally at City Hall in the department of communication.
With pkk number you can start driving course immediately !!!