Wanted guidance in AS


i want to know more abt Functions & Prototypes.
Can anybody help me to study AS in an oder.

I’ve only a little knoledge in AS. and c, c++. but that too not extensively.
only i can play around the loops (if,for,while,…)
but it is nowere comparing to the depth of action script .

Now am in a confusion from wer to start !!! :q:

so if any one can guide me it’ll be a valuble help.