most terminals on fuse block constantly hot

[70chevlow]

Most of my terminals on the fuse block are hot all the time and my battery is draining. I don't know how the previous owner wired itand I really don't know anything about electrical. Can anyone help me with where to even start. Both ignition terminals are hot with key in off position fuel gauge is hot with key in off position basically all but the radio. Please if you can give me advice how to begin fixing this problem it would be greatly appreciated.