I ended my period on Friday and just received my birth control pills today. Since I already had my period, do I just wait to take the birth control until I get my period again or can I start today? So if I start taking the pill today, I take the inactive pills in the order I'm going which is 4 weeks and then start the new pack?

I'm sure this has been asked and I feel dumb for asking it but I am a newbie to birth control and would like some insight.