Well, just so you and anyone else doesn't think i'm being "ageist", i'll let you know upfront that i'm almost 80, have absolutely no formal IT or electronics education nor related work experience but i still manage to get by at a 'hobbiest' level.

Say exactly what bits you don't understand and we will gently walk you thru it step-by-step Mate. I'm an Aussie and i strongly suspect G_N is too, as a nation we've always specialised in linking arms with and getting Pomms outta da sh!t. Also we only beat 'em up at sports so you're safe here to ask for whatever help you need.