Any advice you have in that regard would be greatly appreciated. I plan to make a map showing the Starbucks, Fedex places, and film stores. It would be nice to be able to mark up a map with areas to steer clear of. I was stationed on Treasure Island in the 70s and have been there a few times since, doing the walking photo expedition thing, but places change over time and, while I plan to stick mostly to the core of the city, I won't be focusing on tourist areas like Pier 39, etc.Depending on what kind of camera you are using, learn a bit about various neighborhoods. There are few truly dangerous areas, but there are places where I don't like being alone carrying a few hundred or thousands dollars worth of easily-transported materials.