An introduction to architecture:
Architecture is more about space than walls. Architecture is more about functionality than structure. Architecture is more about people’s life than pure aesthetics. Louis Isadore Kahn (my far-preferred architect) said that architecture is about light and silence, that architecture is timeless, that beauty in itself doesn’t exist, as it is the result of a social and historical selection.
I would say that if you shot architecture, shot exactly what moves you: details or compositions; forms, spaces, shadows, lights and reflections, rhythms and textures; life in these spaces (all kind of life); born, transformation, aging and death of buildings and built spaces, traces left either by time, nature or human, etc. You don’t need to understand architecture unless you intend to build something. To photograph it, you only need to feel it.
By analogy with a novel, photographing architecture is a question of “reading”, not of “writing”. You won’t need the skills of a writer, but those of a reader.
I’m an architect (used to be one, years ago).