What I'd like to know is anything to be aware of when first starting (body related), suggestions for sensible clothing (I'd be arrested for wearing some of things I've seen people wearing while cyling), anything else to be aware off.
You'll probably be using some of the other emergency services if you don't wear some sort of padded cycling shorts - they get more important with weight of rider IME.
I'd recommend under-liner shorts, to be used as underwear. That way you can dress normally on top. They can be hard to find in plus sizes, though, I had to get my 3-pair for my Czech trip in the USA.