Change brake fluid and ventilate the Spacestar 1.3 BJ. 99

Hello friends, I have to change the brake fluid and the brake support at the rear (drum brakes) at my Space Star 1.3 BJ 1999. I have already done the change of the drum brakes, but since my car mechanic has retired, I have to change the brake fluid myself to save the workshop costs, now also the brake fluid and vent the brakes, because I also have to change the brake cylinders of the drum brakes at the rear due to leakage. hrlichen Anleitung be helpful, how I can do the home? So where do I start with renewing the brake fluid, where do I leave it first, at the front left or right….where do I escape first, at the front left or right, at the back left or right, etc., after renewing the pads and the liquid, how do I escape correctly? I am grateful for every tip.