CE (Creative Electronics) has four sections: an amplifier to power the on-board speaker, a timer/oscillator, a preamp/noise generator (with onboard microphone), and a high-pass/low-pass filter with resonance.
You connect the different sections together by twisting wires together. See the cheat sheet below for more information
You can download the booklet from the workshop (1.6 MB) here. It explains all four sections of CE in detail, as well as a lot of basic information about electronics.
Sad to say, we are out of stock on these.