Can anyone suggest a good map to use to better learn the San Francisco area?

As some of you already know, I am moving to San Francisco next week. I have a little bit of an idea about the area that I will be living in but I have never lived in a big city and am a little nervous about getting around! I wanted to know if anyone can recommend a specific website (aside from sfmta.com and google maps) that will help familiarize me with the area & muni as well!

If you moved to SF, or any big city, how did you best prepare? I know I’ll get used to it while I’m there but I’d like to do some research now (okay, maybe I’m just kind of excited!)!!