I'm really struggling to get to grips with my camera lenses. Does anyone have any information or know of any guide that explains things in really (and I mean really!) simple terms?

For instance, there's a whole bunch of figures on my lenses... what does it all mean?

And how do I know when to use each one?

I know a lot of you indicate in your 'signature' which lenses you have... I've just put my camera details as I'm at a loss re my lenses! (In my defence, I didn't buy them, I was given them).

Up until recently I've been shooting in auto but really want to get to grips with manual mode.

Any help/tips/suggestions/advice would be most appreciated!