I will ship anonymously. The cover has yellowing and scratches. There is a feeling of use, but I didn't find any writing. I think it can be used for learning without any problems. Regarding the number of days until shipment: I have set the shipping time to "4-7 days" because it may take time due to business trips, etc., but I usually ship within 1-3 days. If you are in a hurry, please check with me in the comments before purchasing.