I came to learn more about Poland & Polish language.
You will learn about Poland and a lot of the information to be found here is very useful, but you will also learn about Poland from the perspective of many different people with widely differing personalities. Let's just say that quite often these people don't always agree with each other ;)
As regards learning Polish language, there are tons of threads here with a wealth of information contained in them.
If you get a couple of decent books on grammar, and search the threads, there's no reason why you shouldn't be able to pick up Polish.
My Polish isn't the best, but I joined this forum specifically for help with learning the language, and I've learned loads.
Only you can decide whether you want to stay or not, but if it were me I think I would give it a bit longer before I made a decision.
if you want to learn some Polish, you would probably have to enroll in online Polish classes somewhere (or regular Polish-language school).
Untrue, while I'm nowhere near fluent, I've learned from books, internet sources, mixing with Polish people and this forum in particular.