This is normally the most exciting part of beginning a language with this method, because you actually had another person do something for you that is really of great value. I remember receiving my first recording in Japanese. I listened to that thing about 100 times. I shadowed it, repeated it to my family multiple times and still hear it in my head from time to time.
So now you have about 30-50 sentences sitting in front of you and you've read through them, but don't quite have a feel for how they are supposed to sound. This is very demotivational because if you can't hear the flow of the sentence, you may be afraid that you are learning it incorrectly and that can really be a tough obstacle to get through.
Vocabulary is best tackled as efficiently as possible, as it takes the most work to ingrain. Luckily, there are ways to handle vocabulary learning in a smart way that you will use until you are a fluent speaker in the language. At that level, however, you won't even notice you are using any technique because you are so used to using it in your first language. This is called "learning in context" and it's a part of the foundation that you need employ firmly and frequently.
