Can someone help me out and explain what arpeggios are and explain how to use them? Or show me where I can find such information.
They're broken chords; that is, the notes of a chord played in succession as opposed to simultaneously. More information can be found in the theory sticky at the top of this forum.

How hardcore is that one!
The notes of a chord played seperatley, usually in some kind of order (root position, 1st inversion, 2nd inversion, etc). Look up inversions on wikipedia if you don't know what they are.

An A minor arpeggio would consist of A C and E repeating for a number of octaves, descending or ascending or both.
repeating for a number of octaves
Not necessarily.
My name is Andy
Quote by MudMartin
Only looking at music as math and theory, is like only looking at the love of your life as flesh and bone.

Swinging to the rhythm of the New World Order,
Counting bodies like sheep to the rhythm of the war drums