I highly recommend the San Francisco Deluxe hop-on/off tour. We purchased our tickets through Groupon for a nice price, and got an additional discount through Groupon Select. It’s a great way to get around and learn about the city. Our tour guide Jason was awesome. He gave a lot of insight and background information as we cruised, and he added humor, so it was really entertaining. We’ll definitely buy another tour when we come back for a visit. My advice is to dress in warm layers, because it gets very cold and windy when traveling across the Golden Gate Bridge.