Okay, I’m just starting to get to grips with the whole wordpress way of doing things; please don’t chastise me for being a total noob.
I’ve just discovered the option that enabled me to import all posts from my blogspot blog. The import went smoothly, and I’ve now recategorised the old posts with the tags I’ve set up here. I still need to sort out the images which sometimes don’t display properly — and the embedded videos aren’t displaying at all (in fact, html editing in general is acting a little weird for me; I’ll probably have to look into that).
In any case, I’ll get round to sorting it all out at some point, but for now I’ve been pretty impressed by how quick and (relatively) painless it was.