Thanks. I have never tried to build from source before so let this be my first try.
I already had a beginners problem: According to the guide the first steps are git clone https://github.com/micahflee/torbrowser-launcher.git cd torbrowser-launcherbut there is no torbrowser-launcher folder to cd to. And from where should I cd to it? I don't know but is the right question: Where does git clone the source to?