how can i clean my throttle body?

Hi all.
Let me start by first saying, I am not very mechanically experienced or an expert! so Don't go blinding me with mechanical science please!! laymans terms if poss!!

I would like some help on how i go about cleaning my throttle body for my 1999 Astra 1.6 sxi please?
Do you have any links to diagrams/ vids to help me??
thank you!