I started putting together a mini series of revision notes last year in the form of pdfs with practice questions and commentary for students to look through. GDC methods are given with reference to the Texas TI-82 calculator but can similiarly be done with most other graphical calculators. Here’s the first two sets of notes:

  

Using the normal distribution
Differentiation and Integration

I’d be keen to hear back what people think about the format and if there are any other topics that it would be particularly useful to try and cover.