I've noticed that in some of the video's the signer does the exact opposite of what is stated in the written text on the subject.  I noticed it twice in module 3.3 sentence structure. Once it said that the signed format should be "book read" then the video shows "read book." This also happened with time words, the text says that time words should be placed at the beginning of the sentence, which also what I have learned in classes, but then in the video the time words are at the end.