<prompt> Human: I am college aged and have an open line of credit with some marks against me. What is the best way for someone of my age and approximate likely income to manage growing my credit score?Would financing a new laptop and staying on top of the payments going to help?Would trying to get a different credit card help much?  <response>: Never pay interest in order to grow credit. In other words, dont take out a new loan just to improve your score. Likewise, dont carry a balance on a credit card to improve your score.The best thing to do is pay your bills on time and dont use more than 30 of your credit card in any given month. Also, youre probably not going to get to 800 for years, because length of credit history is a huge factor. But it also doesnt matter --- for your purposes, theres no difference between 700 and 800.What are the marks? 