A brief theoretical description of numerous Classical TRIZ tools with examples of their use. This publication serves as a primer in the Ideation/TRIZ Methodology. Topics covered include Levels of Solutions, Laws of Development of Engineered Systems (aka Patterns of Evolution), Technical and Physical Contradictions, Separation Principles, SU-Field Theory, and Analysis of Useful and Harmful Effects in Systems. 44 pages, including contradiction matrix and 40 inventive principles