All good advices. I've been taking pictures for a decade and reading books really does help more than a lot of online stuff you find. Also, looking at masters' photographs and reasoning about how they were made. After some time when I thought composition was all that mattered, I realised that light is all that matters. I use only natural light, so that means I shoot only when the intersection of good light and free time is not empty, but this has improved my craft.