Full Moon: height of power. Full in every aspect of the word.
Waxing moon: growing. A time to create and draw to you. time for come here magic
Wanning Moon: time to diminish or get rid of. time for go away magic
Dark moon. also very powerful. Banish and Death for example to quite smoking. to ask for the death of a toxic habit or addiction.
All magic is pretty much come here (I want to create this in my life) or go away ( I want to be rid of this) In general I find that most people do spells for love, money (success) healing and protection. I will be posting some spells in the not to distant future and having the basic knowledge of the elements and moon phases will help with that.
Of course the thing that will help the most is a strong relationship with the Divine. If magic is something you are interested in doing I would say a good way to prepare is to try and do a daily circle for yourself(this will help you skill level with circle casting) and in it ask the God and Goddess to be with you and give you guidance. Perhaps meditate on them for a while.