Salzburg is a compact city and can easily be explored on foot. However, if you're planning on visiting some of the sights outside of the city, public transportation is readily available. The bus, train, and cable car systems are efficient, affordable, and reliable. A day ticket for the city buses costs €4.20, while a single fare for the train to St. Gilgen costs between €7-€15, depending on the time of day.
If you have more time, consider taking a day trip to the nearby town of Hallstatt, which is renowned for its stunning Alpine scenery and charming Old World architecture. If you have less time, skip some of the sights listed in this itinerary and focus on the ones that most interest you. Additionally, consider purchasing a Salzburg Card, which provides discounted admission and free public transportation to many of the city's top attractions.