Dekiru Fit YouTube Basic + Application Techniques: Latest Definitive Edition (Dekiru Fit Series) Paperback. I purchased this new at a bookstore and read it once, then stored it on a bookshelf, so it's in good condition. I have read it once, so please refrain from purchasing if you are overly concerned about the condition. There are no lines or check marks in the text. As a precaution against rain, I will put the book in a plastic bag and mail it in a brown envelope. Thank you.