i bout her notes from ebay,just type in excelsior college, lisa arends and you will find plenty of her cds.they are worth it ,i bought the micro cd for 8 dollars.wish i knew before i bought the books.i can tell you i only opened my book about three times to clarify not and also used the internet for other enquiries.i hope you like them as much as i did,i am using her notes now for anatomy and NC1 AND 2.GOOD LUCK