Work a scenario end-to-end. Your early choices change what questions come next and what endings are reachable. There is more than one good strategy, and more than one way to walk into trouble.
Note. FAR references reflect the Revolutionary FAR Overhaul. Use these scenarios to practice the decision pattern and the shape of tradeoffs, not to quote section numbers verbatim. Thresholds and ceiling values are the ones in effect at the time of writing.