Geo, that was a splendid, helpful, detailed, spot-on post. Thank you! Apologies for the delay in answering, i've been ill and have not touched anything bigger than my 'phone re: computers.
Just about to re-read your post. You've helped me avoid some classic beginner's problems. Much appreciated!
...and Klesh, thanks for the welcome. As a trembling pile of minutia is the only way to space i'm sure i'll have many questions. Hopefully i'll be in a place to be able to return the favours and help out as well soon.
Right, off to break the surly bonds of... well, you know the rest!
Lazarus42