not that i know of... Amiga's worked on SCSI (which is why they were so damn'd expensive, and the A500/500+ used external connected HDDs either through the Serial Port or DVP on the left side (just pickup and look you should see the little port to grab off where it goes)
there are some trapdoor boards which add proper SCSI to the A500/500+ but i'm not sure which as i never had one for it ... the A600/1200's were better if you wanted a HDD really as they had everything builtin for it (when you look at how they allowed you to update your tech you might realise why Amiga went bust lol)
if you do get one then Workbench should be able to be installed on it, would have to get out the manual again to figure out how cause it ain't easy with anything under 3.5
the disk format for the Amiga was a little weird, 740kb ... you can use a std 1.44 for it and an XP machine should recognise the format (its surprising to know what support they actually put into windows regarding the amiga software)
not sure about software though - i could try to find some for ya, they're a pretty small knit community now so shouldn't be hard to find out alot of information quick as its just the total hardcores
problem is finding a community in the first place hehee