As I wrote in the post Subway versus Metro, I love the DC Metro for getting around. In addition, the metro buses are fairly easy, and the DC Circulator buses are excellent for tourists! All three take “SmarTrip” Cards, which we have found to be extremely useful, especially if doing train/bus transfers. The WMATA website has a lot of useful information.
The train itself is super easy to navigate. There are five different lines, each with a different color. You need to know which direction you will be traveling, indicated by the last station in the direction you want to go. Do note that not all trains run to the final station; some trains run a shorter route. Also, check the WMATA website beforehand to know if any stations will be closed or where delays may be expected.
The Circulator buses cost $1 and have quite a number of useful routes. Keep a Circulator map handy!
The DC LIke A Local blog has lots of helpful hints regarding riding Metro.
