okay so your working on something along the lines of the Garden of Pomagranates by Regardie. .. if your not you want to take a look at that edition done by the Cicero's. I don't agree with everything that they say but they write some good pieces and this is one of them. ( the main point of disagreement is that the imagination is not separated from a psychic experience and there is a big difference. They're settling for a lower level of development than they should I think) This is something where your looking at first and formost the connection with God. Remember the siphera are emmanations of God in creation. You cannot loose sight of that fact. God reveals the mysteries to you. No one else can do that. This is his way of letting you get to know him in a new way a way that can only be done here from earth. Prayer in this type of hermetic study is essential and entirely not emphasised enough. you cannot do this of yourself you have to work with the Divine to accomplish the acension.
Second yes projection and scrying are essential skills. I am an audio scryer. This is not somthing I was born with. Astral projection is the same skill as scrying only applied in a different way. There's a lot of good material out there Remote viewing for example is also scrying given a more culturally acceptable label. I would suggest looking through Frank Kepples files as I mentioned before. Focus is essential and for projection you have to be relaxed and focused for a period of time. Very difficult to do and control. But for the application I think your interested in your looking at a year of training just on projection and scrying alone. You need to have a regimine and be very disciplined with it. I work twice a day and other things related as well such as writing and such. You need to have a thorough understanding of the core document of hermeticism and this the Emerald Tablet. That is this document here
http://www.sacred-texts.com/alc/emerald.htm and Theosophy for modern hermeticism
http://www.sacred-texts.com/the/index.htm Alchemy is another resource and it's good to understand and of course the Zohar which is now available online. This is the primary kabbalistic text. You need to keep practicing and be patient with results. Don't settle for less. When you scry or project you should experience these things as an intensely vicseral experience. This can be done if your work at it and don't give up.