<prompt> Human: Ive done a little bit of research, but Im far from an expert on the matter. Just want to make sure that I get the most out of it.Its a 500 limit, 22.9 APR. My plan is to use it occasionally for coffee etc., things I can afford on a regular basis, and pay the balance in full to avoid paying interest. But when, exactly, should I pay it off? My payment due day is the 8th of every month. Should I pay it on the 8th? On the 7th? anytime before the 8th?Ive also read that having a higher available line of credit is beneficial in that it decreases your ratio of used credit if used appropriately. I just got my card 2 days ago. Is it too soon to call and request a higher line of credit? When should I do this? Overall it seems this is much less complicated than I thought it would, which makes me nervous because I cant help but feel like theres something Im missing. Thanks! :Assistant: Also: My parents are relatively financially unstable. Theyre responsible, etc., just dont make a lot of money. Im considering adding my mother as an authorized user on my card, getting a second card to give to her in case of emergency. I trust her with the card 100, she would not use it without asking me first or without good reason, but could doing this impact me negatively?  <response>: If you want to care for your parents save up for money in cash and put it in their bank account for savings. 