And I'll give you some advice if you want to learn about Enochian the "Angels and Demons" are the best to ask, but be extremely careful when even reading words in that language. Also I have never seen any accurate information on this language on the Internet so I would recommend asking an entity to help you with it.
As far as it goes with learning about entities there are many people and books that are helpful. The keys of Solomon are all alright just do not take the rituals to seriously in those books. Although the sigils and circles displayed in the books are alright and I have never heard of them ever letting anyone down.
Hope that I was some help
And happy travels