This site is packed with Electronic circuits and projects for students and enthusiasts to develop and build. There are completed projects and circuits covering a range of topics, often with simulation circuits using LiveWire.
TEACHER

Group Projexts, resources, circuit design.
STUDENT

Support material, projects, circuits.
ENTHUSIAST

Circuits, projects, reference.
Circuit Bricks
With Circuit Bricks you can design your circuits by breaking them down into functional sections:

Then select a template circuit for each section to form the final circuit. Full descriptions of each section helps understand the function of the entire circuit.
Circuit BLOX

A modular system of circuit construction, similar to Circuit Bricks, that only requires a screwdriver and wire. Discrete circuit Blox modules can be combined to create a range of circuits in minutes.