Dom,
I'd echo that reference to the wide angle availability. Getting some interest into the foreground is often what lifts a snap into a picture. When I travelled with a Canon G3 I bought one of those wide angle converters ( I think it gave me 24mm or 28mm) and hardly ever removed it.
Forget about those long lenses unless you are into paparazzi work. Or animals which we assume you are not.
90mm is regarded as a good portrait lens. But that is because it nullifies any distortion. But the sort of work you say you'd be photographing might even benefit from a bit of distortion.
I have the 24 to 70 zoom for my everyday lens and I try to force myself to use it wider than narrower - and look for something interesting or relevant to put in the foreground. And remember the wider you go the more depth of focus you have.
The problem with the less expensive digital cameras is that few fixed lens versions have a reasonably wide zoom and the SLR's, because the sensor is smaller than a 35mm frame, turn all the lenses you attach into ones with longer focal length.
I cannot think of one book to suggest. You'll get far better advise around here.
Neil has a jolly good web site with lots of teaching notes.
http://www.dg28.com/index.html
And Edmond also has a good site - which I apologise Ed is not in my bookmark list!
When it comes to looking at good images I second the advice to look around the web.
Keep the questions flowing and don't worry you have offended nobody. Clearly you want to learn. It is people who don't 'cause they know all the answers who are not so welcome around here.
Tony
London UK