Life / Indian moved to Poland [532]

I am a resident of India. I am planning to work in Poland on work permit. I am a IT professional. I have sponsore for my work permit. Can you please help me in answering following queries:

a) Can I visit all the countries in Europe with my Poland Work permit.
b) Can I work in all the countries in Europe with my Poland Work permit.
c) Can I switch my job in Poland or other countries in Europe
d) Is there any condition for my dependants(wife and child) to accompany me in Poland.
Is there any condition like I need to be in Poland for 2 yrs., only then my dependants can join me.

Thanks in advance.