Skills determine what your character can do as well as what they know. Adding one point to a skill is the equivalent of the character experimenting with new ideas, or reading a basic instruction manual, or taking an introductory lesson from one who knows the skill at an advanced level (or higher). This gives the character the ability to use the skill with no special proficiency. Before a character can attempt to use a skill they must apply at least one point to it.
Each skill will have an attribute associated with it. These attributes are skill requirements; no skill may have a modifier that is higher than the associated attribute modifier, e.g. if your Intelligence modifier is +2, you cannot have your Reading skill modifier any higher than +2.
Skills come in three types: Natural, Knowledge, and Martial
Natural Skills are the skills that can only be learned through practice and experiment. Things like walking and running are simple natural skills, Wild Magic is an example of a difficult natural skill.
Knowledge Skills are skills that can be learned from a book. Such as, Particle Physics, reading, and writing.
Martial Skills like Karate, Archery, or wood carving must be learned from a teacher.
These learning limits only apply to the first level of the skill once a character has the basic concepts further learning can be done without the assistance of the trainer or books.