For anything you wanna find out specifically, you can always google it. And the thing I realised is the more I use the macbook, the more I realise how much I like the hidden features.
When you get your MB, PM me, I have some software (freeware) which you can use to clean up the Mac. For example:
Monolingual ( Mac comes with too many languages and architectural support like for PowerPC or Intel 32bit which we don't need and take up a few GB of disk space, this cleans it up)
Onyx (helps to clean up the cache)
Carbon Copy Cleaner (alternative to time machine)
and some others which are useful.