My advice is to be patient and make sure your expectations are realistic. Many students drop out of language courses because they think they’ll become fluent in the language in just a few weeks. Unless you’re unusually adept at learning languages or you’re immersed in the language 24 hours a day, it will take you a year or two of study before you can comfortably use the language in a non-artificial setting.
A rough plan of study:
Phase 1 - Get coursework in the language to memorize a basic vocabulary and learn the commonly used grammar. Make sure you balance your studies between the spoken and the written form of the language. If you spend too much time on the written language at first, you will develop misconceptions of how the sounds and it will be much harder to speak the language properly later.
Phase 2 - After you finish your basic coursework, continue with the intermediate coursework, but supplement your studies with simple newspaper articles. Watch Polish movies with English subtitles and see how many words you can pick out. Speak the language whenever you can. Try to get to the point where you can understand at least a third of what’s being said in a “natural” setting.
Phase 3 - Now it’s time to remove the “training wheels” and immerse yourself in the language. Watch as much Polish TV as you can (without English subtitles). Immerse yourself in Polish books, music, and websites. Now that you have a working knowledge of the language, it’s time to learn how to think in Polish and not internally translate everything into English. The way to do this is to eliminate all use of English from your practice and only work in Polish.
Good luck!