How to become in astral Being

how do you become in astral being what God/goddess Demon/Demoness Can you Call to help you Achieve this and what are the steps to doing so

You are already one you must merge with your shadow self to become godhead

Shadow Self ? here is a book from the people who inspired modern mysticism, it only gives you half the picture. Aleister Crowley gives you more of a full picture there are other greats, but Rudolph Steiner is a great place to start because he give you exercises in his other book Knowing Higher worlds