You know the vocabulary, not yet the mechanics.
You recognise the language — signs, Saturn returns, the general shape of the thing — but the parts that make a chart specific are still fuzzy. That is an extremely normal place to be, because almost all popular astrology content stops at sign descriptions and never explains what a house is or why the birth time matters. The good news is that the mechanical layer is small. It is roughly five concepts, and once you have them, most astrology writing becomes easy to evaluate rather than intimidating.
Start with the Big Three and what each one actually describes — they are three different functions, not three flavours of personality.