I agree and disagree with several points made here.
First, the mere idea of anyone stating he wants the truth shows a great lack in understanding the very concept of truth. I might have been handy to read Nietzsche on this point but even without him it should be obvious that there is no Truth. Reality can be considered a bio-memetic manifestation and as such; truth will always escape us and what, or how, we perceive will never be more than a manifestation. What Nietzsche talks about is us creating our own truth and act as if it is true very well knowing it isn't.
People thinking they can discover truth somewhere, by either exploration or absorbing different kinds of knowledge, will never come any step closer to truth because all they do is change the memetic representation of their reality. A mind filled with a rather uniform sort of knowledge will be as close to truth as a mind filled with tiny bits about everything. Still, many think that because their views are somewhat different from others that they are closer than them to truth. It shows just how little they know.
I agree that one will not become a better Satanist by studying books and that the real satanic part is happening in life. If, however, one wants to overcome his current self, it is not enough to be natural. Naturals at life act without thinking, reducing them close to an animal-like state. As such, the more retarded one is at the level of consciousness, the more natural one becomes. Most humans however don't suffer this advantage. The memetic part of our reality, or how we interpret that what we perceive, is a social construct. Since childhood we are fed knowledge by others and this will represent itself in our reality. The art is to reshape our own world. Then we go out there and put it into practice. Sitting in a chair reading thick volumes or waving a wand while chanting incantations isn't going to bring anyone power. Power is going out there and acting. If we don't have an impact, on whatever level, we posses no power at all and are by definition subject to others. That's where being satanic is situated.