Protip: if Bernd gets a manual, or watches an instructional youtube video, or dls an informational, he should try out the thing, test it, so when the time comes to do it in "live", when matters he should have an idea how to do it correctly. For example I don't do great many things and I know I'm doing it wrong since other stuff I tried and stuff in practice can look very different than in theory. So for example hoarding informational images is useless in itself. Even manuals lack many details or what they say can be interpreted in different ways, or maybe you have to use a different material or improvise. Don't think that "oh I have an e-book about X topic, when I need it I just pull it out, read a little and will manage" because you are dead wrong. If you do this, you are fucked, it's guaranteed.