I got this information from a website a long time ago...
Auto Writing is the process, or product, of writing material that does not come from the conscious thoughts of the writer. The writer's hand forms the message, and the person is unaware of what will be written. It is sometimes done in a trance state. Other times the writer is aware (not in a trance) of their surroundings, but the actions of their writing hand.
We attempt automatic writing for several reasons. First - to get information about our personal life. Second - to confirm something from some who exists on the other side or has deceased.
The answers can be surprising ... but always be cautious as with any tool of divination chosen - such as the ouija board.
When attempting automatic writing you may use a writing implement, computer, or any other means of communicating through the written word. Many people prefer the computer as they can type quickly without filtering the information coming through. When reread - even a typo can mean something.
To divert the focus of the writer - shifting from left brain logical thinking - to right brain intuitive thinking - take a pencil in hand, place it against a piece of paper as if about to write something. Then turn your attention to something else, such as watching television, reading a book, or talking with someone. For many people, their hand will write coherent material.
Much of this goes to 'control' and have much you are willing to give to a non-physical entity.
The amount of time spent on automatic writing can vary with the person and the session.
Words, sentences or whole paragraphs may appear. Often, the writing is illegible - the text appearing jumbled - without proper grammar or punctuation - mostly run-on sentences.
Messages can be written in a language - or hand writing style - not recognized by the writer and signed by someone unknown.
A picture or symbol may be written.
Some automatic writers know who is giving the messages while others do not. If the energies feel comfortable to you then you will soon learn who the entity is and why he/she is writing with you.
If you feel the least bit uncomfortable with the entity or the information received STOP!
Let all information flow! Do not stop to think about - or process - what you are writing / typing.
If you feel that more than one entity is trying to write through you - ask them to take their time and you will write with them one at a time. Always get a name.
GETTING STARTED
Get into a comfortable position.
Be sure you are free of distractions.
If you are not alone---tell others that you have some personal correspondence to take care of!
If you are tired --this could actually work better for you.
Now clear your mind of chatter. Feel the muscles in your body--neck--arms--shoulders-- especially your face--totally relaxed . . .
You are going to use your pen and paper to talk to your guide.
Know that whatever the answer is to your questions will be written by the spirit.
Do not allow time for your mind to listen to this information. Just type. You may even want to focus your eyes on something near the paper which keeps the left brain busy while it right brain does the channeling.
It may seem like your own thoughts at first but that is OK. It will get easier and quicker.