Make listening your priority and trust your ears over your eyes.
Classroom language learning has unfortunately developed with a stronger emphasis on the visual, and what we often forget is that language is actually an auditory phenomenon.
If you find a mismatch between a written text and a spoken one, you would be wise to assume that the mistake is in the writing, for it’s much less likely that a native speaker (hopefully you are listening to one) would make a elementary mistake with their language that you would be able to spot.
Portable devices like smart phones and the huge libraries of content available on sites like LingQ.com are making it possible for you to do most of your language learning through listening.
As Stephen Krashen explains in this video, we all acquire language in the same way. There is only one way that it can be done, and that is through getting enough comprehensible input into your ears.
Listen to Krashen explain to you for himself: