i have listen to the audio file.. and have to say that i agree to them on some level
tiny tip for everyone
in order to learn English... you really have to start from listening.. and understand learn to understand them.. this is especially effective when you listen in a conversation between native English speakers
although this process may take some time
but.. once you master the listening part.. speaking and writting skills will just follow along
as for the vocabularies.. it will come natural too! since you can listen to other people's conversation.. you will be able to learn new words and even guess their meanings without going to the dictionary... furthermore, it will also help you gain the ability to spell them as you speak each words correctly