I have always been very fascinated by this fella and have read many stories about him. He founded the thelema. If I wanted to follow the same path, and study the same magic as he did. Is thelema where I should start? I see he was also in the Golden Dawn as well so should I study this as well? any advice?
Perhaps the best place to start would be by reading the books that Crowley, himself, wrote. Understand that Thelema and Golden Dawn are rigorous paths and you can expect many years of work and study to master either of them.
Do what thou wilt shall be the whole of the law! 93 I used to be a Active member of the O.T.O the O.T.O isn't a teaching body. I don't recommend not joining them but however if you do join them try to become a member of the A.A the outer order. I know the A.A teaches the magic of the O.T.O you can also find members of the A.A pretty much in any Lodge or Oasis or Camp of the O.T.O
Hoping you become fruitful in your study of magic
Sincerely Chris
The first link is Crowley's philosophy, the second is the backbone textbook of his system, the third is the syllabus for his order A.'.A.'. and all the texts except the temple ceremonies can be found online.
The Golden Dawn was a major influence of A.'.A.'. and certainly reading any text written for or by that order's members is great for either system, however, there are of course differences here and there, these are much more technical and in my opinion only pertinent to actual initiates of either order who have gone through the work and experienced the initiation ceremonies.
In terms of practical advice Liber E is a good place to start, and also Liber O, these are the backbone of the system, however, you may want to read into other sources as these were written as notes to be expanded upon by one's superior in the order.
Other names to check: Regardie, Cicero(s), Nick Farrell, Dion Fortune, James Eshelman, and David Shoemacher.
David Shoemacher's "Living Thelema" is perhaps the best beginners introduction to Crowley's system out there which I have come across and covers the techniques of Liber E and O and then some more to boot. It's cheap too.
If you have any questions I am also open to discussion.