Invocation To A Knowledge Or Helpful God, I need help on my understanding. Options

I need a lesser entity to pray or speak to. I don't have any candles or anything for me to do those ritual things. The best thing I can do is pray. I have a prayer that I made but haven't tried it yet. I've been doing bad on my Pre-Calculus work partly because I don't understand. I've been getting help but still doing bad. I managed to get a B the first nine weeks but the second nine weeks I'm doing really bad I have a 75. I'm really pi@@ed so I need some spiritual help. Please help me

Here it is:

O Great God or Goddess [u]name
I humbly ask to bestow upon me great understanding and wisdom for my current problems in math.
Help me to learn the material for my benefit.
I humbly offer my gift of music up to you O Great God or Goddess.
AMEN

I don't know if I'm suppose to use Amen after the prayer. Also, since you guys have already heard of my experiences with demonic entities. Is it possible to have relations with one or to find out who it is that was doing it to me. Also, are the goetia woman pretty hot out of this world. Also, I don't know if this is true but I heard that angels are grey aliens. (IMG:style_emoticons/default/face08.gif) (IMG:style_emoticons/default/chair.gif)

I have really good fealings About God Thoth you can trust him and Call him is God of wisdom to help you
for knowledge .