For the most part, the records are written in a set pattern. The guidebooks (listed earlier in this blog) are great at helping us get started, and actually, it doesn't take long to figure out what sort of information is likely to be in each record.
Also, there are some wonderful sites with genealogical vocabulary for Swedish research. (The modern dictionaries are not as helpful because the records often use archaic Swedish. I've been told by a few Swedes that they also had to learn the archaic words used in the records. We who don't speak Swedish are not the only ones who have to learn these words.)
I have found these sites very helpful.
SweGGate (Click on the previous word: SweGGate) for the link.) has several dictionaries with difficult-to-find words, arranged by categories for the most part.
This list can be sorted by English or Swedish.