Crowley did not see the Abramelin operation through, however, and attained knowledge and conversation later on- 1906 if my memory serves correctly.
Crowley also did not recommend the Abramelin operation to his own students but instead offered Liber VIII which was given to someone who had been through the building blocks of his own A.'.A.'. system, which I recommend you do prior to undertaking such a task. Not only will it give you an arsenal with which to approach the task, but will also let you know where your strengths are and all round prepare you for the task- magically and psychologically.
Don't run before you can walk is my only advice to you, and don't rush to the goal, enjoy the journey and learn through experience. That said, I know nothing about you, your history of practice, or your personal spiritual development and thus not going to dissuade you, just pointing out some facts.