Complex Systems is a broad area of research focused on studying systems made of a large number of interacting components and the emergence of complex collective behaviors. Social systems, the brain, and electricity grids are examples. A related area of interest is Complex Adaptive Systems, referring to systems reorganizing themselves to solve complex problems. Neural Networks and Memristors are two such examples. We are focused on the practical aspects in the application of these tools, but also advancing the fields from a theoretical perspective.