Most homeowners look at a floor plan and see rooms. Architects look at it and see traffic flow, sightlines, and how natural light moves through the day. Learning to read a plan this way changes how you evaluate any property or renovation proposal.
Start with the entry sequence: where you land when you walk in, and what you see first. Then trace how someone would move from the front door to the kitchen, and from a bedroom to a bathroom at night without crossing a public space. Good plans minimize awkward crossings.
Next, check window placement against the compass direction noted on the plan. South-facing rooms (in the northern hemisphere) get more consistent light; north-facing rooms stay cooler and more even, which matters for home offices and art studios.
Finally, look at room proportions relative to furniture you actually own. A 10×10 room sounds fine until you realize a queen bed plus two nightstands barely fits with clearance to walk around it.