The game is still confusing to me to. I usually just play the quick game as a tourist and exit. I don't know how to avoid the turrets unless i just have to crawl.
Don't worry about that. The game is still being developed and for a while it might be still difficult or confusing. The most important thing that might be interesting to you is a mode that I plan to start working on in a few months. This mode will resemble a linear single player game and will introduce each concept one at a time.
That said, if there is something confusing, just ask. This way I will know what should be redone or requires a tutorial/more tutorials/different tutorials.
As for the distant turrets. You may switch off that section (Options/Play area and mark no crouching). I also plan to change quickgame setup a bit but that should happen in a few weeks.