Okay, I had to join allnurses, just to comment on this post! Thank you so much for posting the link to the YouTube videos! That guys is amazing, I am taking my test in four days and although I have read through the math chapter and looked at several math sites do practice questions, I have still struggled with understanding everything in the book (I am horrible when it comes to math). His videos are so helpful in explaining things and break things down into an understand format, especially where he goes through the book question by question. I am hoping I can get through all his videos in the next few days. But just the improvement you saw with only doing 28 out of the 80 videos makes me very hopeful that even if I can't get through them all, it will still help give me a good foundation. Thank you again, good luck on the test :)