How can I configure Unity?
What personalisation (software) would you recommend for Ubuntu 11.10? I would greatly appreciate it.
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A short list of software
Conky - '..light-weight system monitor for X, that displays any information on your desktop.'. You can create awesome desktops with Conky.
Compiz - 'Compiz is an OpenGL compositing manager.' You can customize your desktop with this nice piece of software.
Ubuntu Tweak - 'Ubuntu Tweak is an application to config Ubuntu easier for everyone.'
Add Unity Lenses - A list of 10 awesome lenses.
CompizConfig Settings Manager has lots of appearance options, if this is what you are looking for. You can find it in Ubuntu Software center.
For more technical tweaking I prefer Ubuntu Tweak. Get it from here: http://ubuntu-tweak.com/
Also, don't forget about the System Settings, already found on your machine: just type Settings in the Dash search bar to find it.