The front wheels have discs, pads and calipers. The rear wheels have drums, shoes and pistons.
Here we have the piston at the top, the shoes down either side and a load of springs.
There are 2 tools I used, the 1st one is required. The handbrake cable spring compressor.
The 2nd is brake show spring pliers as seen below. To be honest, they are crap and didn't work well. I'd probably look at using a metal hook (like a dental hook) and a bit of strength. The tools on the right hand legs aren't used.