Admittedly, this was easier for me because I already know Russian, but I still think that a lot of people could learn quickly by doing the same thing I did.
Quite simply, I went throught my entire Colloquial Polish book, chapter by chapter over the course of 8 days, doing one chapter every morning and one chapter every evening, reading all Polish text out loud and doing all of the exercises in the book.
You can ask questions and find more information at my blog .
