Basics of magic
One's inner light is composed of 2 (sometimes 3, depending on who you're talking to) parts.
ID: A diagram showing the different parts of one's inner light.
Eminent Light: Energy/light that is emitted by the inner light(s). Replenishes over time by itself, though the process can be sped up by light sources or nearby light creatures.
Inner Light: The light that makes up one's being. Can be sacrificed to perform more long-lasting and powerful spells. Does not replenish by itself, and must be restored using "roaming light" (or a possible equivalent source).
Core Light: The one part of your inner light that you cannot sacrifice during spell casting. Doing so would be like voluntarily holding your breath to suffocate. Exists mainly on a conceptual level because there is no distinction between core light and the rest of one's inner light.
The basis of magic revolves around being able to move one's inner light outside of one's body (in the case of ancestors anyways, skykids' lights are already outside of their body). The first spell most people were taught is the light spell, which simply calls for the movement of light. A well-known variation of the light spell is the candle spell, which calls for giving light specific form.
ID: A diagram showing the slight difference in casting a light spell as opposed to a candle spell.
Once the movement of inner light has been mastered, one can begin trying to make it behave differently.
ID: A diagram showing the different ways light can be manipulated to produce different spell effects. Telekinesis is produced by using light given form to move objects. Flight is a stronger derivative of telekinesis, using light given form to propel oneself into the air (easier to perform with something to act as "wings"). A "guiding light" can be summoned by making a basic light spell glow brighter or change colors when close to the object of desire.