Maps of Kabul are available from Afghanistan Information Management Services (http://www.aims.org.af/) who can print out custom wall maps of the city. Open Street Map is the only online street level map presently available for Kabul. Currently Google has offered the brand new service or road map in Afghanistan. it is mostly reliable except it wouldn't have all details. Google Map
Downtown Kabul is relatively compact and walkable - a good option in the spring and fall - summers bring intolerable heat and dust, whilst winters bring snow and mud. Pavements are few, and you need to keep your wits about you when crossing roads.
If you are nervous about your safety walking around areas such as Wazar Akbar Khan and Taimani to a restaurant etc. is fine day or night - central Kabul at night is walkable but be sure you know where you are going, and how to get back to your guesthouse. Given the volatile security situation always be aware of any demonstrations, gathering crowds, etc. which could spiral out of control quickly. Keep a low profile, wearing simple clothes and for ladies covering your hair with a scarf or shawl. It is also wise to vary your routes frequently to reduce the threat of kidnapping. People are generally helpful and polite if you ask for directions.
Be wary walking around traditional residential areas eg near the city wall - conservative Afghans are suspicious of anyone snooping around their house, and children may start throwing stones / setting their dog on you.
Taxis are plentiful and to hire the whole car should cost around 30 to 50 Afg depending on destination and bargaining skills. Some drivers have learned basic English, but such drivers may try to charge a slightly higher price and are most likely to be found loitering near Westerner-friendly locations airport, major hotels. While the city is fairly safe, it isn't a bad idea to be proactive and avoid catching a taxi near any sensitive location embassy, military facilities, 5-star hotels. It is customary for women to always sit in the back seat. After dark local yellow taxis become a rarity, so keep a few taxi numbers in your phone as a backup.
There are only a couple places to rent a car in Kabul, one of which is:
Afghan Logistics & Tours(http://www.afghanlogistic...) 700 277 408, 700 288 668, 700 479 435, 799 391 462. Rents late-model Toyota cars, SUVs, trucks, & minivans along with a driver who doubles as a mechanic very important on Afghanistan's harsh roads.
Afghan Logistics & Tours
(http://www.afghanlogistic...) 700 277 408, 700 288 668, 700 479 435, 799 391 462. Catering mostly to expats they are probably the safest way to get around town. 24 hour minicabs are available as well as airport pickups and dropoffs. $5-7 around town, $15 to airport, $20 from airport.