Zero electrical power

I just inserted a differentbattery in my 93 camery and hooked up to the wrong poles by mistake. There is absoulutely no power to anything, (headlights, ignition etc.) I am praying that I have blown a fuse and not fried everything. How do I check. whcih fuse it could it be. Wheredo I find such a fuse and how do you change a fusible link if that is the problem?