When we feel like a fish in the water on stage, we can be interested in the amplifiers and presets contained in them - if our company uses a passive system. Of course, if we plan to work in the studio, this issue does not apply to us, but it does not hurt to learn a bit.
At this point, when all the technical details are nothing new to us, it's time to learn about the processes that take place in the mixer. It is best to find out how a given device affects the sound and in what order we should use each processor. In the era of digitization, an effective way will be to work in a DAW type program, i.e. a digital non-linear editing platform where we can translate theory into practice.
It will be a good idea to read books related to the field of interest to us, or to hire yourself as an assistant producer and watch him work at the mixer. Once we feel strong enough, we will have to get to know the construction and interface of the mixer - unfortunately every company has its own technologies and way of working. Although all the processes are the same, the same patching, i.e. assigning the appropriate channels from the rack to the mixer surface, can cause a lot of problems - so it is worth choosing a mixer that is quite popular, e.g. Soundcraft VI, DiGiCo SD, Yamaha CL, or Allen & Heath dLive. These are professional digital consoles used at the biggest events - the sooner we figure out how they work, the better for us.