<prompt> Human: Im 18, going into first year of college. I got this only to start building my credit score. I am very good about leaving it at home and only using it on calculated purchases textbooks that I already have money set aside for. My sister told me the best way to get your credit score up was to wait till the bill was do and pay in full. My brother tells me the best way is to pay immediately after the purchase in full. Which way is better. Any perks of either? Thanks!  <response>: Paying the bill in full once is way easier than sending in payments every day. 