With the exception of Social Attributes Lunars can learn attributes and their Charms on their own. They don't need outsiders to teach them. Even with Social Attributes, because they are so innate the Lunar improves them by interacting with others, not being trained. One cannot change what someone is, the level Lunar Charms work on, with outside training. Learning Charms and Knacks is a development of the Lunar's self.
   "the raksha takes hold of the malleable reality around him and shapes it to fit the story of his existence."
   Maybe what all Lunars desire is freedom. This is what gives the Wyld Lunar Essence the ability to bond with them and what gives them the desire to use it.
   "most are inconsistent even in defining their own inherent qualities." It is this reliance on their inherent qualities that allows Lunars to survive in the Wyld since they live by what they are not what they are defined as within Creation. It' also what attracts a Lunar Exaltation to a host. In fact they need their Attributes to be able to understand and act in the Wyld. To say Lunars are less powerful than Solars is to misunderstand their purpose. They are less powerful than Solars in Creation, which is not the realm  for which they were made. Just as the raksha are able to pass through the Gate of Sundraprisha and take on a physical form that lets them exist within Creation, so the Lunars' Essence is made from the stuff of the Wyld, extending it's power through their body and allowing the Lunar to shape it for their own purpose. They fact that they can change shape in Creation is just a side effect. Because of it they can enter the Wyld and become part of it like the Unshaped Fair Folk.
    The basic Charms of a Celestial Hero martial art are just a way of attaining an understanding of the style's true precepts that allows them to learn the later (Exalted type) Charms.
   The Wyld is a realm so inchoate and ephemeral that notions can become 'real.' As the Fair Folk can make such abstract things real, so the Lunars can turn real things including themselves into abstractions that can live within the Wyld. Or rather they can turn physical things into expressions. The most important is their beastman or Spirit Shape- nothing more than what they are as an idea- that can enter the Wyld freely. Many Lunars prefer to wear it in Creation than their human shape. Through the Sacred Hunt and the use of Knacks they learn to express themselves in different ways. A Lunar can do this at any time due to the Wyld Essence in their Exaltation that makes their body a small Wyld zone, but their true potential is only revealed once they enter the Wyld, or use their powers against those within it. For instance in  normal circumstances the Lunars' Excellencies are far weaker than the Solars', more akin to the Dragon-blooded except more flexible. Since many Fair Folk powers work in conflict with a being's Attribute + Essence however Lunar Excellencies are ideal.
   "The first thing to understant when creating a raksha character is to understand that everything about the character is a deception engineered wo facilitate an interaction between and shaped being of Creation and and an entity so far removed from Creation as to be utterly beyond mortal comprehension." In the first part Lunars must be the opposite. They must open themselves up and be so honest that their intentions can exist in and of themselves. In the second they have to so the same. Although Lunars cannot become the same unformed masses that dwell within the Wyld they are able enough to attune with this realm that they are able to become like a part of one. Although the Fair Folk would be able to tell the difference a Lunar can exist within the Wyld (with enough practise) as easily as an Unshaped Fair Folk' Emanation. The most powerful and skilled Lunars are able of venturing into Pure Chaos.
   Magical materials make for more potent stuff for creating in the Wyld. By far the best for this purpose is moonsilver.