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Are they discs all round or drums in the rear?
Changing disc pads is something you'd definitely be able to do, drums are a bit more involved but easy enough still. How's the pedal feel? Is it at all spongy as it may be time for a bleed or fluid change.
I get pretty paranoid about brakes these days because when I was in NZ I had a total brake failure and put my little 4x4 corolla through a fence and then ended up on a sandy beach!
Are they working as well as they're meant to? I've found old brakes work pretty well if they're in good condition. They're never as sharp as modern brakes but my 19 year old scoob stopped just as well as our 3 year old 130i.