Australia / Australian citizen wanting to go to Poland for as long as possible - needs Polish Visa [49]

Hey everyone.
Im a 21 year old male living in Australia wanting to go to Poland for as long as possible. I was wonderring how difficult it is to get a tourist visa or a working visa?

I have 4 years in hospitality experience and have qualifications in fitness (if any of this helps), i have no criminal history, also my grandfather who was a Polish ww2 veteren died when i was 2 (heard somewhere that having a bloodline can help me get citizenship there, true?).

I would appreciate any help as to knowing how difficult it is to getting a visa into Poland and how long for etc.