question for electricians

[Jeffrey Gagnon]

i have some questions about some electrical stuff in the house. so there are no gounds for seems like almost everything in the home. and they have some fuses that are oversize. my dad said that other than just changing out the box to a newer style that the wiring through the house may need to be upgraded because the old wires cant handle the loads anymore and were tripping the fuses so the previous owner just upped the fuzes. what are your thoughts? obviously its hard to say without a whole inspection so that's noted :)