I am comfortable sharing what I feel you could fairly easily find with some research.

In approaching goetics, keep this in mind. Using the system of renaissance/ceremonial magic outlined in the Lesser Key of Solomon to summon a demon is sort of the equivalent of you walking down the street and suddenly finding yourself bound in a bottle cap with a pompous ant bossing you around and demanding that you bring it sugar.

Demonalators, those who worship demons, take what I feel is an overly friendly view. They do not use Solomonic rituals at all. They actually give praise and worship. In my experience, these demons ate not your friends, and most definitely do not have your best interests in mind.

When evoking, I use a few simple rules you can find on various forums. First, never ask or demand something of a demon on your first successful invocation. Introduce yourself, make a polite offering, and dismiss them.

Second, do not use the more commanding tools of the ritual unless nescacary. People do not realize the immense power of language. It is binding. Using threatening commands is like threatening to beat your butler after you've already hired him. You're already in control, don't be a dick about it. I go by the principle, don't do anything the demon will still be pissed about once the circles closed.

The third I'm willing to share is simple. Maintain no ongoing relationship with any goetic you summon. Keep your directions clear, very specific, and short term. Again, we cannot even concieve of what these beings truly are. They are not your friend. For a solid example of what not to do, read especially about the end of Aleister Crowley's life.

And, most of all, research research research. People devote years to approaching these beings for a reason. The very excellent Joseph Peterson edition of the Lesser Key of Solomon is available on Amazon cheap, and contains all parts including the ars Goetia.

http://www.amazon.com/The-Lesser-Solomon-Joseph-Peterson/dp/157863220X