Anonymous2007 do this as u go throughout the year- you can leave blank pages in between topics if you want to add stuff.
some people handwrite and others use textbook notes and glue it in. find which one you can synthesise better. you want to have the most information in the least amount of space so you dont waste time endlessly searching for stuff. having a few bell curves to fill in can help, as well as any finance solver formulas. you won't need an example for every concept (ie: lower/upper fence formula is quite simple and doesn't need an example), whereas crashing in networks is more difficult and it might be beneficial to have an example.
also, keep a "mistake bank" at the back of your bound for difficult practice exam questions.