After finding shelter and supplies I would ration them as most as I can. I would safe water by showering only what I need and drinking water as least as possible. If I find other people we would need to come to an agreement for who would be the leader. I think we should be united to survive at all costs, and help my sister survive.
I would try to search and reach a no infection zone if there is one. I would need to go to small cities because there are less people and therefore fewer zombies.